diff --git a/base/features.cc b/base/features.cc
index 1c14e499d5ebb..227a3ca32d6c6 100644
--- a/base/features.cc
+++ b/base/features.cc
@@ -70,7 +70,7 @@ BASE_FEATURE_PARAM(bool,
 #endif
 BASE_FEATURE(kLowEndMemoryExperiment,
              "LowEndMemoryExperiment",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(size_t,
                    kLowMemoryDeviceThresholdMB,
                    &kLowEndMemoryExperiment,
@@ -82,7 +82,7 @@ BASE_FEATURE_PARAM(size_t,
 // (see PartialLowEndModeOnMidRangeDevices below)
 BASE_FEATURE(kPartialLowEndModeOn3GbDevices,
              "PartialLowEndModeOn3GbDevices",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to enable LowEndDeviceMode partially on Android and ChromeOS mid-range
 // devices. Such devices aren't considered low-end, but we'd like experiment
@@ -98,7 +98,7 @@ BASE_FEATURE(kPartialLowEndModeOnMidRangeDevices,
 #if BUILDFLAG(IS_ANDROID)
              FEATURE_ENABLED_BY_DEFAULT);
 #elif BUILDFLAG(IS_CHROMEOS)
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #endif  // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
@@ -107,12 +107,12 @@ BASE_FEATURE(kPartialLowEndModeOnMidRangeDevices,
 // Enable not perceptible binding without cpu priority boosting.
 BASE_FEATURE(kBackgroundNotPerceptibleBinding,
              "BackgroundNotPerceptibleBinding",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether to report frame metrics to the Android.FrameTimeline.* histograms.
 BASE_FEATURE(kCollectAndroidFrameTimelineMetrics,
              "CollectAndroidFrameTimelineMetrics",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, post registering PowerMonitor broadcast receiver to a background
 // thread,
diff --git a/base/memory/discardable_memory.cc b/base/memory/discardable_memory.cc
index 1add4162b9583..48c759ccf95f4 100644
--- a/base/memory/discardable_memory.cc
+++ b/base/memory/discardable_memory.cc
@@ -23,13 +23,13 @@ namespace features {
 // multiple supported discardable memory backings.
 BASE_FEATURE(kMadvFreeDiscardableMemory,
              "MadvFreeDiscardableMemory",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_POSIX)
 
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
 BASE_FEATURE(kDiscardableMemoryBackingTrial,
              "DiscardableMemoryBackingTrial",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_ENUM_PARAM(DiscardableMemoryTrialGroup,
                         kDiscardableMemoryBackingParam,
diff --git a/base/message_loop/message_pump_kqueue.cc b/base/message_loop/message_pump_kqueue.cc
index 23a162f5a1950..97e7d24722f21 100644
--- a/base/message_loop/message_pump_kqueue.cc
+++ b/base/message_loop/message_pump_kqueue.cc
@@ -32,7 +32,7 @@ namespace {
 // is resolved.
 BASE_FEATURE(kBatchNativeEventsInMessagePumpKqueue,
              "BatchNativeEventsInMessagePumpKqueue",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Caches the state of the "BatchNativeEventsInMessagePumpKqueue".
 std::atomic_bool g_use_batched_version = false;
diff --git a/base/rand_util_posix.cc b/base/rand_util_posix.cc
index bced7083754bf..c73e28542e967 100644
--- a/base/rand_util_posix.cc
+++ b/base/rand_util_posix.cc
@@ -110,7 +110,7 @@ std::atomic<bool> g_use_boringssl;
 
 BASE_FEATURE(kUseBoringSSLForRandBytes,
              "UseBoringSSLForRandBytes",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace
 
diff --git a/base/task/sequence_manager/sequence_manager_impl.cc b/base/task/sequence_manager/sequence_manager_impl.cc
index 9963ec9502160..34b1dac10037d 100644
--- a/base/task/sequence_manager/sequence_manager_impl.cc
+++ b/base/task/sequence_manager/sequence_manager_impl.cc
@@ -54,7 +54,7 @@ namespace {
 // for an investigation. Disabled by default to avoid unnecessary overhead.
 BASE_FEATURE(kRecordSequenceManagerCrashKeys,
              "RecordSequenceManagerCrashKeys",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constinit thread_local internal::SequenceManagerImpl*
     thread_local_sequence_manager = nullptr;
diff --git a/base/task/sequence_manager/thread_controller.cc b/base/task/sequence_manager/thread_controller.cc
index f82e2ab448edb..d4b9071eff5f4 100644
--- a/base/task/sequence_manager/thread_controller.cc
+++ b/base/task/sequence_manager/thread_controller.cc
@@ -28,7 +28,7 @@ namespace {
 // metadata may still be recorded.
 BASE_FEATURE(kThreadControllerSetsProfilerMetadata,
              "ThreadControllerSetsProfilerMetadata",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Thread safe copy to be updated once feature list is available. This
 // defaults to true to make sure that no metadata is lost on clients that
diff --git a/base/task/task_features.cc b/base/task/task_features.cc
index ff76a8d9ee97a..19ff44475d996 100644
--- a/base/task/task_features.cc
+++ b/base/task/task_features.cc
@@ -24,7 +24,7 @@ namespace base {
 
 BASE_FEATURE(kUseUtilityThreadGroup,
              "UseUtilityThreadGroup",
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAddTaskLeewayFeature,
              "AddTaskLeeway",
@@ -39,9 +39,9 @@ BASE_FEATURE_PARAM(TimeDelta,
                    "max_precise_delay",
                    kDefaultMaxPreciseDelay);
 
-BASE_FEATURE(kAlignWakeUps, "AlignWakeUps", FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kAlignWakeUps, "AlignWakeUps", FEATURE_ENABLED_BY_DEFAULT);
 
-BASE_FEATURE(kTimerSlackMac, "TimerSlackMac", FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kTimerSlackMac, "TimerSlackMac", FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExplicitHighResolutionTimerWin,
              "ExplicitHighResolutionTimerWin",
@@ -60,10 +60,10 @@ BASE_FEATURE(kRunTasksByBatches,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_WIN)
              FEATURE_ENABLED_BY_DEFAULT);
 #else
-             FEATURE_DISABLED_BY_DEFAULT);
+             FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
-BASE_FEATURE(kThreadPoolCap2, "ThreadPoolCap2", FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kThreadPoolCap2, "ThreadPoolCap2", FEATURE_ENABLED_BY_DEFAULT);
 
 // Note: Do not use the prepared macro as of no need for a local cache.
 constinit const FeatureParam<int> kThreadPoolCapRestrictedCount{
diff --git a/cc/base/features.cc b/cc/base/features.cc
index 0f9acebc7082b..58e8ff4713c1a 100644
--- a/cc/base/features.cc
+++ b/cc/base/features.cc
@@ -23,7 +23,7 @@ BASE_FEATURE(kAlignSurfaceLayerImplToPixelGrid,
 BASE_FEATURE(kSynchronizedScrolling,
              "SynchronizedScrolling",
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -34,7 +34,7 @@ BASE_FEATURE(kMainRepaintScrollPrefersNewContent,
 
 BASE_FEATURE(kDeferImplInvalidation,
              "DeferImplInvalidation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kDeferImplInvalidationFrames{
     &kDeferImplInvalidation, "frames", 1};
@@ -46,13 +46,13 @@ BASE_FEATURE(kUseDMSAAForTiles,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kUIEnableSharedImageCacheForGpu,
              "UIEnableSharedImageCacheForGpu",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kReclaimResourcesDelayedFlushInBackground,
              "ReclaimResourcesDelayedFlushInBackground",
@@ -60,11 +60,11 @@ BASE_FEATURE(kReclaimResourcesDelayedFlushInBackground,
 
 BASE_FEATURE(kDetectHiDpiForMsaa,
              "DetectHiDpiForMsaa",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kReclaimPrepaintTilesWhenIdle,
              "ReclaimPrepaintTilesWhenIdle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This saves memory on all platforms, but while on Android savings are
 // significant (~10MiB or more of foreground memory), on desktop they were
@@ -74,7 +74,7 @@ BASE_FEATURE(kReclaimPrepaintTilesWhenIdle,
 // to find a better balance between checkerboarding and memory.
 BASE_FEATURE(kSmallerInterestArea,
              "SmallerInterestArea",
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 );
 
 const base::FeatureParam<int> kInterestAreaSizeInPixels{
@@ -82,7 +82,7 @@ const base::FeatureParam<int> kInterestAreaSizeInPixels{
 
 BASE_FEATURE(kReclaimOldPrepaintTiles,
              "ReclaimOldPrepaintTiles",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kReclaimDelayInSeconds{&kSmallerInterestArea,
                                                      "reclaim_delay_s", 30};
@@ -99,11 +99,11 @@ BASE_FEATURE(kEvictionThrottlesDraw,
 
 BASE_FEATURE(kAdjustFastMainThreadThreshold,
              "AdjustFastMainThreadThreshold",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kClearCanvasResourcesInBackground,
              "ClearCanvasResourcesInBackground",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kMetricsTracingCalculationReduction,
              "MetricsTracingCalculationReduction",
@@ -157,15 +157,15 @@ BASE_FEATURE(kTreesInViz, "TreesInViz", base::FEATURE_DISABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTreeAnimationsInViz,
              "kTreeAnimationsInViz",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSendExplicitDecodeRequestsImmediately,
              "SendExplicitDecodeRequestsImmediately",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kThrottleFrameRateOnManyDidNotProduceFrame,
              "ThrottleFrameRateOnManyDidNotProduceFrame",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNewContentForCheckerboardedScrolls,
              "NewContentForCheckerboardedScrolls",
@@ -196,7 +196,7 @@ BASE_FEATURE(kRenderSurfacePixelAlignment,
 
 BASE_FEATURE(kPreventDuplicateImageDecodes,
              "PreventDuplicateImageDecodes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kInitImageDecodeLastUseTime,
              "InitImageDecodeLastUseTime",
@@ -208,7 +208,7 @@ BASE_FEATURE(kDynamicSafeAreaInsetsSupportedByCC,
 
 BASE_FEATURE(kThrottleMainFrameTo60Hz,
              "ThrottleMainFrameTo60Hz",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kViewTransitionCaptureAndDisplay,
              "ViewTransitionCaptureAndDisplay",
@@ -218,14 +218,14 @@ BASE_FEATURE(kViewTransitionCaptureAndDisplay,
 // UKMs calculated by the DroppedFrameCounter.
 BASE_FEATURE(kStopExportDFCMetrics,
              "StopExportDFCMetrics",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool StopExportDFCMetrics() {
   return base::FeatureList::IsEnabled(features::kStopExportDFCMetrics);
 }
 
 BASE_FEATURE(kZeroScrollMetricsUpdate,
              "ZeroScrollMetricsUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kViewTransitionFloorTransform,
              "ViewTransitionFloorTransform",
@@ -244,15 +244,15 @@ const base::FeatureParam<int> kRenderThrottledFrameIntervalHz{
 
 BASE_FEATURE(kFastPathNoRaster,
              "FastPathNoRaster",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExportFrameTimingAfterFrameDone,
              "ExportFrameTimingAfterFrameDone",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kInternalBeginFrameSourceOnManyDidNotProduceFrame,
              "InternalBeginFrameSourceOnManyDidNotProduceFrame",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // By default, internal begin frame source will be used when 4 consecutive
 // "did not produce frame" are observed. It stops using internal begin frame
diff --git a/chrome/browser/browser_features.cc b/chrome/browser/browser_features.cc
index 9141973a27726..fb883bfdc1af5 100644
--- a/chrome/browser/browser_features.cc
+++ b/chrome/browser/browser_features.cc
@@ -26,13 +26,13 @@ BASE_FEATURE(kAllowUnmutedAutoplayForTWA,
 // prerender and preconnect for autocomplete action predictor.
 BASE_FEATURE(kAutocompleteActionPredictorConfidenceCutoff,
              "AutocompleteActionPredictorConfidenceCutoff",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is used to enable an experiment for the bookmarks tree view in the
 // side panel, providing users with a hierarchical view of their bookmarks.
 BASE_FEATURE(kBookmarksTreeView,
              "BookmarksTreeView",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This flag is used for enabling Bookmark triggered prerendering. See
 // crbug.com/1422819 for more details of Bookmark triggered prerendering.
@@ -52,7 +52,7 @@ BASE_FEATURE(kCertificateTransparencyAskBeforeEnabling,
 #if BUILDFLAG(GOOGLE_CHROME_BRANDING)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(GOOGLE_CHROME_BRANDING)
 
 // Enables using network time for certificate verification. If enabled, network
@@ -67,7 +67,7 @@ BASE_FEATURE(kCertVerificationNetworkTime,
 #else
 BASE_FEATURE(kCertVerificationNetworkTime,
              "CertVerificationNetworkTime",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_CHROMEOS)
 
 // Killswitch that guards clearing all user data in the ProfileImpl destructor.
@@ -97,21 +97,21 @@ BASE_FEATURE(kDestroyProfileOnBrowserClose,
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // DestroyProfileOnBrowserClose only covers deleting regular (non-System)
 // Profiles. This flags lets us destroy the System Profile, as well.
 BASE_FEATURE(kDestroySystemProfiles,
              "DestroySystemProfiles",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Enables being able to zoom a web page by double tapping in Chrome OS tablet
 // mode.
 BASE_FEATURE(kDoubleTapToZoomInTabletMode,
              "DoubleTapToZoomInTabletMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables showing the email of the flex org admin that setup CBCM in the
@@ -119,7 +119,7 @@ BASE_FEATURE(kDoubleTapToZoomInTabletMode,
 BASE_FEATURE(kFlexOrgManagementDisclosure,
              "FlexOrgManagementDisclosure",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
@@ -132,13 +132,13 @@ BASE_FEATURE(kFlexOrgManagementDisclosure,
 // https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Notifications/notifications_actions_customization.md
 BASE_FEATURE(kIncomingCallNotifications,
              "IncomingCallNotifications",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !BUILDFLAG(IS_ANDROID)
 // Adds a "Snooze" action to mute notifications during screen sharing sessions.
 BASE_FEATURE(kMuteNotificationSnoozeAction,
              "MuteNotificationSnoozeAction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // This feature enables monitoring of first-party network requests in order to
@@ -146,7 +146,7 @@ BASE_FEATURE(kMuteNotificationSnoozeAction,
 // network request controlled by that policy is observed.
 BASE_FEATURE(kNetworkAnnotationMonitoring,
              "NetworkAnnotationMonitoring",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This flag is used for enabling New Tab Page triggered prerendering. See
 // crbug.com/1462832 for more details of New Tab Page triggered prerendering.
@@ -183,7 +183,7 @@ const char kBrowserCommandIdParam[] = "BrowserCommandIdParam";
 // are cleared on a WebContents when ReadAnything loses interest in it.
 BASE_FEATURE(kReadAnythingPermanentAccessibility,
              "ReadAnythingPermanentAccessibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // When this feature is enabled, Chrome will register os_update_handler with
@@ -232,7 +232,7 @@ BASE_FEATURE(kSandboxExternalProtocolBlockedWarning,
 // Otherwise, it will only decrypt existing data.
 BASE_FEATURE(kSecretPortalKeyProviderUseForEncryption,
              "SecretPortalKeyProviderUseForEncryption",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If true, encrypt new data with the key provided by
 // FreedesktopSecretKeyProvider. Otherwise, it will only decrypt existing data.
@@ -248,7 +248,7 @@ BASE_FEATURE(kTriggerNetworkDataMigration,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -271,7 +271,7 @@ BASE_FEATURE(kTriggerNetworkDataMigration,
 // on ChromeOS.
 BASE_FEATURE(kTabCaptureBlueBorderCrOS,
              "TabCaptureBlueBorderCrOS",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables runtime detection of USB devices which provide a WebUSB landing page
@@ -287,7 +287,7 @@ BASE_FEATURE(kWebUsbDeviceDetection,
 // Build 14393) onwards.
 BASE_FEATURE(kBrowserDynamicCodeDisabled,
              "BrowserDynamicCodeDisabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The Chrome DLL can be pre-read with ::PrefetchVirtualMemory() from the
 // browser or a child process. Pre-reading is supposed to bring the whole DLL in
@@ -303,7 +303,7 @@ BASE_FEATURE(kBrowserDynamicCodeDisabled,
 // When enabled, child processes never pre-read the Chrome DLL.
 BASE_FEATURE(kNoPreReadMainDll,
              "NoPreReadMainDll",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, child processes don't pre-read the Chrome DLL if we believe the
 // Chrome DLL is on an SSD (i.e. pre-read only on spinning disk).
@@ -320,7 +320,7 @@ BASE_FEATURE(kNoPreReadMainDllIfSsd,
 // gains).
 BASE_FEATURE(kNoPreReadMainDllStartup,
              "NoPreReadMainDllStartup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Time after browser startup during which child processes don't pre-read the
 // Chrome DLL when `kNoPreReadMainDllStartup` is enabled.
@@ -340,7 +340,7 @@ BASE_FEATURE(kReportPakFileIntegrity,
 #if !BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 #endif  // BUILDFLAG(IS_ANDROID)
 
diff --git a/chrome/browser/enterprise/connectors/device_trust/device_trust_features.cc b/chrome/browser/enterprise/connectors/device_trust/device_trust_features.cc
index c6b17895a00fb..fa599581d49a3 100644
--- a/chrome/browser/enterprise/connectors/device_trust/device_trust_features.cc
+++ b/chrome/browser/enterprise/connectors/device_trust/device_trust_features.cc
@@ -8,7 +8,7 @@ namespace enterprise_connectors {
 
 BASE_FEATURE(kDTCKeyRotationEnabled,
              "DTCKeyRotationEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsKeyRotationEnabled() {
   return base::FeatureList::IsEnabled(kDTCKeyRotationEnabled);
@@ -33,7 +33,7 @@ bool IsDTCKeyRotationUploadedBySharedAPI() {
 
 BASE_FEATURE(kDTCAntivirusSignalEnabled,
              "DTCAntivirusSignalEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsDTCAntivirusSignalEnabled() {
   return base::FeatureList::IsEnabled(kDTCAntivirusSignalEnabled);
diff --git a/chrome/browser/enterprise/profile_management/profile_management_features.cc b/chrome/browser/enterprise/profile_management/profile_management_features.cc
index f8372978b8066..8fd3cf4be4939 100644
--- a/chrome/browser/enterprise/profile_management/profile_management_features.cc
+++ b/chrome/browser/enterprise/profile_management/profile_management_features.cc
@@ -10,11 +10,11 @@ namespace profile_management::features {
 
 BASE_FEATURE(kThirdPartyProfileManagement,
              "ThirdPartyProfileManagement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableProfileTokenManagement,
              "EnableProfileTokenManagement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOidcAuthProfileManagement,
              "OidcAuthProfileManagement",
@@ -30,11 +30,11 @@ BASE_FEATURE(kOidcEnrollmentTimeout,
 
 BASE_FEATURE(kEnableGenericOidcAuthProfileManagement,
              "EnableGenericOidcAuthProfileManagement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOidcEnrollmentAuthSource,
              "OidcEnrollmentAuthSource",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOidcAuthHeaderInterception,
              "OidcAuthHeaderInterception",
diff --git a/chrome/browser/enterprise/remote_commands/user_remote_commands_service_factory.cc b/chrome/browser/enterprise/remote_commands/user_remote_commands_service_factory.cc
index d1f7658e78214..81a6c8af27e0b 100644
--- a/chrome/browser/enterprise/remote_commands/user_remote_commands_service_factory.cc
+++ b/chrome/browser/enterprise/remote_commands/user_remote_commands_service_factory.cc
@@ -15,7 +15,7 @@ namespace enterprise_commands {
 
 BASE_FEATURE(kUserRemoteCommands,
              "UserRemoteCommands",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // static
 UserRemoteCommandsServiceFactory*
diff --git a/chrome/browser/file_system_access/file_system_access_features.cc b/chrome/browser/file_system_access/file_system_access_features.cc
index 3ff46cd7524f1..8e9ed5dcc2803 100644
--- a/chrome/browser/file_system_access/file_system_access_features.cc
+++ b/chrome/browser/file_system_access/file_system_access_features.cc
@@ -12,7 +12,7 @@ namespace features {
 BASE_FEATURE(kFileSystemAccessPersistentPermissions,
              "kFileSystemAccessPersistentPermissions",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
diff --git a/chrome/browser/media/router/media_router_feature.cc b/chrome/browser/media/router/media_router_feature.cc
index 6675fa0cec62f..5893c308d9b4b 100644
--- a/chrome/browser/media/router/media_router_feature.cc
+++ b/chrome/browser/media/router/media_router_feature.cc
@@ -45,10 +45,10 @@ namespace media_router {
 BASE_FEATURE(kMediaRouter, "MediaRouter", base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCastAllowAllIPsFeature,
              "CastAllowAllIPs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kAllowAllSitesToInitiateMirroring,
              "AllowAllSitesToInitiateMirroring",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kDialMediaRouteProvider,
              "DialMediaRouteProvider",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -60,14 +60,14 @@ BASE_FEATURE(kShowCastPermissionRejectedError,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCastMessageLogging,
              "CastMessageLogging",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/1486680): Remove once stopping mirroring routes in the global
 // media controls is implemented on ChromeOS.
 BASE_FEATURE(kFallbackToAudioTabMirroring,
              "FallbackToAudioTabMirroring",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
diff --git a/chrome/browser/navigation_predictor/search_engine_preconnector.cc b/chrome/browser/navigation_predictor/search_engine_preconnector.cc
index d78428aa46f13..29b171998cc1c 100644
--- a/chrome/browser/navigation_predictor/search_engine_preconnector.cc
+++ b/chrome/browser/navigation_predictor/search_engine_preconnector.cc
@@ -41,13 +41,13 @@ namespace features {
 
 BASE_FEATURE(kPreconnectFromKeyedService,
              "PreconnectFromKeyedService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kPreconnectToSearch,
              "PreconnectToSearch",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kPreconnectToSearchWithPrivacyModeEnabled,
              "PreconnectToSearchWithPrivacyModeEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 }  // namespace features
 
 WebContentVisibilityManager::WebContentVisibilityManager()
diff --git a/chrome/browser/page_info/page_info_features.cc b/chrome/browser/page_info/page_info_features.cc
index 322a0b99d57c5..07e03676e27c6 100644
--- a/chrome/browser/page_info/page_info_features.cc
+++ b/chrome/browser/page_info/page_info_features.cc
@@ -28,7 +28,7 @@ BASE_FEATURE(kAboutThisSiteAsyncFetching,
 
 BASE_FEATURE(kPrivacyPolicyInsights,
              "PrivacyPolicyInsights",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsMerchantTrustFeatureEnabled() {
   auto* variations_service = g_browser_process->variations_service();
diff --git a/chrome/browser/performance_manager/policies/page_discarding_helper.cc b/chrome/browser/performance_manager/policies/page_discarding_helper.cc
index 0a06cb5dfc604..3323a6b51ed2f 100644
--- a/chrome/browser/performance_manager/policies/page_discarding_helper.cc
+++ b/chrome/browser/performance_manager/policies/page_discarding_helper.cc
@@ -36,7 +36,7 @@ namespace {
 
 BASE_FEATURE(kSkipDiscardsDrivenByStaleSignal,
              "SkipDiscardDrivenByStaleSignal",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kDescriberName[] = "PageDiscardingHelper";
 
diff --git a/chrome/browser/performance_manager/policies/policy_features.cc b/chrome/browser/performance_manager/policies/policy_features.cc
index 7b3478bf773cb..8a28c7ebb0c9c 100644
--- a/chrome/browser/performance_manager/policies/policy_features.cc
+++ b/chrome/browser/performance_manager/policies/policy_features.cc
@@ -30,7 +30,7 @@ BASE_FEATURE(kTrimArcVmOnMemoryPressure,
              "TrimArcVmOnMemoryPressure",
              base::FEATURE_ENABLED_BY_DEFAULT);
 
-BASE_FEATURE(kTrimOnFreeze, "TrimOnFreeze", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kTrimOnFreeze, "TrimOnFreeze", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDisableTrimmingWhileSuspended,
              "DisableTrimmingWhileSuspended",
diff --git a/chrome/browser/policy/messaging_layer/upload/configuration_file_controller.cc b/chrome/browser/policy/messaging_layer/upload/configuration_file_controller.cc
index 358f48c80a6b5..89e5816eacba7 100644
--- a/chrome/browser/policy/messaging_layer/upload/configuration_file_controller.cc
+++ b/chrome/browser/policy/messaging_layer/upload/configuration_file_controller.cc
@@ -40,7 +40,7 @@ bool DestinationListsEqual(ListOfBlockedDestinations list_a,
 // automated tests. Not exposed on the UI.
 BASE_FEATURE(kReportingConfigurationFileTestSignature,
              "ReportingConfigurationFileTestSignature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 ConfigurationFileController::~ConfigurationFileController() = default;
 
diff --git a/chrome/browser/policy/messaging_layer/upload/record_upload_request_builder.cc b/chrome/browser/policy/messaging_layer/upload/record_upload_request_builder.cc
index dce59dd027984..a82b7a8f1e823 100644
--- a/chrome/browser/policy/messaging_layer/upload/record_upload_request_builder.cc
+++ b/chrome/browser/policy/messaging_layer/upload/record_upload_request_builder.cc
@@ -24,13 +24,13 @@ namespace reporting {
 // from the server.
 BASE_FEATURE(kShouldRequestConfigurationFile,
              "ShouldRequestConfigurationFile",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature used in the tast tests to let the server know that the events are
 // coming from an automated client test. Only used in tast tests.
 BASE_FEATURE(kClientAutomatedTest,
              "ClientAutomatedTest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 UploadEncryptedReportingRequestBuilder::UploadEncryptedReportingRequestBuilder(
     bool is_generation_guid_required,
diff --git a/chrome/browser/policy/policy_util.cc b/chrome/browser/policy/policy_util.cc
index 845fef3d266e2..c5c0a3efe619e 100644
--- a/chrome/browser/policy/policy_util.cc
+++ b/chrome/browser/policy/policy_util.cc
@@ -19,16 +19,16 @@ namespace policy {
 
 BASE_FEATURE(kDevicePolicyInvalidationWithDirectMessagesEnabled,
              "DevicePolicyInvalidationWithDirectMessagesEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kDeviceLocalAccountPolicyInvalidationWithDirectMessagesEnabled,
              "DeviceLocalAccountPolicyInvalidationWithDirectMessagesEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCbcmPolicyInvalidationWithDirectMessagesEnabled,
              "CbcmPolicyInvalidationWithDirectMessagesEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kUserPolicyInvalidationWithDirectMessagesEnabled,
              "UserPolicyInvalidationWithDirectMessagesEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 namespace {
 
diff --git a/chrome/browser/predictors/loading_predictor.cc b/chrome/browser/predictors/loading_predictor.cc
index 68cd0bf0b2b7c..dd5ee5e209123 100644
--- a/chrome/browser/predictors/loading_predictor.cc
+++ b/chrome/browser/predictors/loading_predictor.cc
@@ -40,7 +40,7 @@ namespace features {
 // If enabled, suppresses LoadingPredictor (https://crbug.com/350519234)
 BASE_FEATURE(kSuppressesLoadingPredictorOnSlowNetwork,
              "SuppressesLoadingPredictorOnSlowNetwork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<base::TimeDelta>
     kSuppressesLoadingPredictorOnSlowNetworkThreshold{
diff --git a/chrome/browser/predictors/predictors_features.cc b/chrome/browser/predictors/predictors_features.cc
index 914abba844b79..3f50a8ac2af17 100644
--- a/chrome/browser/predictors/predictors_features.cc
+++ b/chrome/browser/predictors/predictors_features.cc
@@ -13,7 +13,7 @@ namespace {
 
 constexpr base::FeatureState kFeatureEnabledOnlyOnAndroid =
     BUILDFLAG(IS_ANDROID) ? base::FEATURE_ENABLED_BY_DEFAULT
-                          : base::FEATURE_DISABLED_BY_DEFAULT;
+                          : base::FEATURE_ENABLED_BY_DEFAULT;
 
 }  // namespace
 
@@ -31,19 +31,19 @@ BASE_FEATURE(kLoadingOnlyLearnHighPriorityResources,
 // Configures the loading predictor table size and other base parameters.
 BASE_FEATURE(kLoadingPredictorTableConfig,
              "LoadingPredictorTableConfig",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Modifies loading predictor so that the predictions also contain origins of
 // the redirect target of the navigation.
 BASE_FEATURE(kLoadingPreconnectToRedirectTarget,
              "LoadingPreconnectToRedirectTarget",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Modifies loading predictor so that the value of the |always_access_network|
 // attribute is not used when computing the predicting score for an origin.
 BASE_FEATURE(kLoadingPredictorDisregardAlwaysAccessesNetwork,
              "LoadingPredictorDisregardAlwaysAccessesNetwork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Modifies loading predictor so that it can also use predictions coming from
 // the optimization guide.
@@ -64,7 +64,7 @@ BASE_FEATURE(kLoadingPredictorPrefetch,
 // unnecessarily copying response body data.
 BASE_FEATURE(kLoadingPredictorPrefetchUseReadAndDiscardBody,
              "LoadingPredictorPrefetchUseReadAndDiscardBody",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<PrefetchSubresourceType>::Option
     kPrefetchSubresourceTypeParamOptions[] = {
@@ -99,10 +99,10 @@ bool ShouldAlwaysRetrieveOptimizationGuidePredictions() {
 // the same destination to one.
 BASE_FEATURE(kLoadingPredictorLimitPreconnectSocketCount,
              "LoadingPredictorLimitPreconnectSocketCount",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPrefetchManagerUseNetworkContextPrefetch,
              "PrefetchManagerUseNetworkContextPrefetch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace features
diff --git a/chrome/browser/preloading/navigation_ablation_throttle.cc b/chrome/browser/preloading/navigation_ablation_throttle.cc
index 25def7f765d7a..7abfcbd42e13e 100644
--- a/chrome/browser/preloading/navigation_ablation_throttle.cc
+++ b/chrome/browser/preloading/navigation_ablation_throttle.cc
@@ -22,7 +22,7 @@
 namespace {
 BASE_FEATURE(kNavigationLatencyAblation,
              "NavigationLatencyAblation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The amount of time to stall before resuming loading.
 const base::FeatureParam<base::TimeDelta> kNavigationLatencyAblationDuration{
diff --git a/chrome/browser/preloading/prefetch/search_prefetch/field_trial_settings.cc b/chrome/browser/preloading/prefetch/search_prefetch/field_trial_settings.cc
index f19ceca0bee5b..cf710d6389b8c 100644
--- a/chrome/browser/preloading/prefetch/search_prefetch/field_trial_settings.cc
+++ b/chrome/browser/preloading/prefetch/search_prefetch/field_trial_settings.cc
@@ -21,7 +21,7 @@ BASE_FEATURE(kSearchPrefetchServicePrefetching,
 
 BASE_FEATURE(kSearchPrefetchWithNoVarySearchDiskCache,
              "SearchPrefetchWithNoVarySearchDiskCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool SearchPrefetchServicePrefetchingIsEnabled() {
   if (!base::FeatureList::IsEnabled(kSearchPrefetchServicePrefetching)) {
@@ -67,7 +67,7 @@ BASE_FEATURE(kSearchNavigationPrefetch,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_ANDROID)
 );
 
@@ -138,7 +138,7 @@ const base::FeatureParam<base::TimeDelta>
 
 BASE_FEATURE(kSuppressesSearchPrefetchOnSlowNetwork,
              "SuppressesSearchPrefetchOnSlowNetwork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Regarding how this number was chosen, see the design doc linked from
 // crbug.com/350519234.
diff --git a/chrome/browser/push_messaging/push_messaging_features.cc b/chrome/browser/push_messaging/push_messaging_features.cc
index 453bd519f3c4f..71d2ab5a74364 100644
--- a/chrome/browser/push_messaging/push_messaging_features.cc
+++ b/chrome/browser/push_messaging/push_messaging_features.cc
@@ -10,11 +10,11 @@ namespace features {
 
 BASE_FEATURE(kPushMessagingDisallowSenderIDs,
              "PushMessagingDisallowSenderIDs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPushSubscriptionWithExpirationTime,
              "PushSubscriptionWithExpirationTime",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPushMessagingGcmEndpointEnvironment,
              "PushMessagingGcmEndpointEnvironment",
diff --git a/chrome/browser/resource_coordinator/tab_manager_features.cc b/chrome/browser/resource_coordinator/tab_manager_features.cc
index 20b2c87469eb6..8b54284bc5ac5 100644
--- a/chrome/browser/resource_coordinator/tab_manager_features.cc
+++ b/chrome/browser/resource_coordinator/tab_manager_features.cc
@@ -20,7 +20,7 @@ namespace features {
 // timeout is used when this feature is disabled.
 BASE_FEATURE(kCustomizedTabLoadTimeout,
              "CustomizedTabLoadTimeout",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace features
 
diff --git a/chrome/browser/ui/tabs/features.cc b/chrome/browser/ui/tabs/features.cc
index 46f58af459ed3..67cab55a1a320 100644
--- a/chrome/browser/ui/tabs/features.cc
+++ b/chrome/browser/ui/tabs/features.cc
@@ -14,31 +14,31 @@ namespace tabs {
 // https://crbug.com/1346019
 BASE_FEATURE(kSplitTabStrip,
              "SplitTabStrip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables tabs to scroll in the tabstrip. https://crbug.com/951078
 BASE_FEATURE(kScrollableTabStrip,
              "ScrollableTabStrip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const char kMinimumTabWidthFeatureParameterName[] = "minTabWidth";
 
 // Enables tab scrolling while dragging tabs in tabstrip
 // https://crbug.com/1145747
 BASE_FEATURE(kScrollableTabStripWithDragging,
              "kScrollableTabStripWithDragging",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const char kTabScrollingWithDraggingModeName[] = "tabScrollWithDragMode";
 
 // Enables different methods of overflow when scrolling tabs in tabstrip
 // https://crbug.com/951078
 BASE_FEATURE(kScrollableTabStripOverflow,
              "kScrollableTabStripOverflow",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const char kScrollableTabStripOverflowModeName[] = "tabScrollOverflow";
 
 BASE_FEATURE(kTabSearchPositionSetting,
              "TabSearchPositionSetting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool CanShowTabSearchPositionSetting() {
   // Alternate tab search locations cannot be repositioned.
diff --git a/chrome/browser/ui/ui_features.cc b/chrome/browser/ui/ui_features.cc
index bb46ce571a994..f89c5b95a3e65 100644
--- a/chrome/browser/ui/ui_features.cc
+++ b/chrome/browser/ui/ui_features.cc
@@ -25,7 +25,7 @@ BASE_FEATURE(kAllowEyeDropperWGCScreenCapture,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_WIN)
 );
 
@@ -64,20 +64,20 @@ BASE_FEATURE(kLightweightExtensionOverrideConfirmations,
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kOfferPinToTaskbarWhenSettingToDefault,
              "OfferPinToTaskbarWhenSettingDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
 // Shows an infobar on PDFs offering to become the default PDF viewer if Chrome
 // isn't the default already.
-BASE_FEATURE(kPdfInfoBar, "kPdfInfoBar", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kPdfInfoBar, "kPdfInfoBar", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Preloads a WebContents with a Top Chrome WebUI on BrowserView initialization,
 // so that it can be shown instantly at a later time when necessary.
 BASE_FEATURE(kPreloadTopChromeWebUI,
              "PreloadTopChromeWebUI",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kPreloadTopChromeWebUIModeName[] = "preload-mode";
 const char kPreloadTopChromeWebUIModePreloadOnWarmupName[] =
@@ -121,7 +121,7 @@ BASE_FEATURE(kPressAndHoldEscToExitBrowserFullscreen,
 // is not interactable.
 BASE_FEATURE(kScrimForBrowserWindowModal,
              "ScrimForBrowserWindowModal",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a scrim is shown behind tab modal dialogs to cover the content
 // area. This gives user a visual cue that the content area is not interactable.
@@ -129,11 +129,11 @@ BASE_FEATURE(KScrimForTabModal,
              "ScrimForTabModal",
              base::FEATURE_ENABLED_BY_DEFAULT);
 
-BASE_FEATURE(kSideBySide, "SideBySide", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSideBySide, "SideBySide", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSidePanelResizing,
              "SidePanelResizing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTabDuplicateMetrics,
              "TabDuplicateMetrics",
@@ -156,7 +156,7 @@ BASE_FEATURE(kTabGroupsCollapseFreezing,
 BASE_FEATURE(kTabHoverCardImages,
              "TabHoverCardImages",
 #if BUILDFLAG(IS_MAC)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -174,7 +174,7 @@ const char kTabHoverCardAdditionalMaxWidthDelay[] =
 
 BASE_FEATURE(kTabOrganization,
              "TabOrganization",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsTabOrganization() {
   return base::FeatureList::IsEnabled(features::kTabOrganization);
@@ -182,7 +182,7 @@ bool IsTabOrganization() {
 
 BASE_FEATURE(kTabstripDeclutter,
              "TabstripDeclutter",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<base::TimeDelta>
     kTabstripDeclutterStaleThresholdDuration{
@@ -200,7 +200,7 @@ bool IsTabstripDeclutterEnabled() {
 
 BASE_FEATURE(kTabstripDedupe,
              "TabstripDedupe",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsTabstripDedupeEnabled() {
   return IsTabstripDeclutterEnabled() &&
@@ -213,15 +213,15 @@ BASE_FEATURE(kTabOrganizationAppMenuItem,
 
 BASE_FEATURE(kTabOrganizationModelStrategy,
              "TabOrganizationModelStrategy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTabOrganizationUserInstruction,
              "TabOrganizationUserInstruction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTabOrganizationEnableNudgeForEnterprise,
              "TabOrganizationEnableNudgeForEnterprise",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<base::TimeDelta> kTabOrganizationTriggerPeriod{
     &kTabOrganization, "trigger_period", base::Hours(6)};
@@ -242,12 +242,12 @@ const base::FeatureParam<bool> KTabOrganizationTriggerDemoMode{
 // controlled by a web app.
 BASE_FEATURE(kTearOffWebAppTabOpensWebAppWindow,
              "TearOffWebAppTabOpensWebAppWindow",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !defined(ANDROID)
 BASE_FEATURE(kPinnedCastButton,
              "PinnedCastButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables enterprise profile badging for managed profiles on the toolbar
@@ -255,14 +255,14 @@ BASE_FEATURE(kPinnedCastButton,
 // toolbar.
 BASE_FEATURE(kEnterpriseProfileBadgingForAvatar,
              "EnterpriseProfileBadgingForAvatar",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables enterprise profile badging for managed profiles on the toolbar avatar
 // and in the profile menu. On managed profiles, a building icon will be used as
 // a badge in the profile menu.
 BASE_FEATURE(kEnterpriseProfileBadgingForMenu,
              "EnterpriseProfileBadgingForMenu",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables enterprise profile badging for managed profiles on the toolbar avatar
 // and in the profile menu when the policies are set. This acts as a kill
@@ -276,18 +276,18 @@ BASE_FEATURE(kEnterpriseProfileBadgingPolicies,
 // shown in the footer, unless the icon and label are customized by the admin.
 BASE_FEATURE(kEnterpriseBadgingForNtpFooter,
              "EnterpriseProfileBadgingForNtpFooter",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables showing the EnterpriseCustomLabel` instead of the cloud policy
 // manager in the managed disclaimer "Managed by..." in the profile and app
 // menus.
 BASE_FEATURE(kEnterpriseManagementDisclaimerUsesCustomLabel,
              "EnterpriseManagementDisclaimerUsesCustomLabel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnterpriseUpdatedProfileCreationScreen,
              "EnterpriseUpdatedProfileCreationScreen",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kManagedProfileRequiredInterstitial,
              "ManagedProfileRequiredInterstitial",
@@ -300,7 +300,7 @@ BASE_FEATURE(kWebUITabStrip,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -310,7 +310,7 @@ BASE_FEATURE(kWebUITabStrip,
 BASE_FEATURE(kWebUITabStripContextMenuAfterTap,
              "WebUITabStripContextMenuAfterTap",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -319,11 +319,11 @@ BASE_FEATURE(kWebUITabStripContextMenuAfterTap,
 #if BUILDFLAG(IS_MAC)
 BASE_FEATURE(kViewsFirstRunDialog,
              "ViewsFirstRunDialog",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kViewsJSAppModalDialog,
              "ViewsJSAppModalDialog",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
@@ -334,15 +334,15 @@ BASE_FEATURE(kUsePortalAccentColor,
 
 BASE_FEATURE(kPageSpecificDataDialogRelatedInstalledAppsSection,
              "PageSpecificDataDialogRelatedInstalledAppsSection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableManagementPromotionBanner,
              "EnableManagementPromotionBanner",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnablePolicyPromotionBanner,
              "EnablePolicyPromotionBanner",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kInlineFullscreenPerfExperiment,
              "InlineFullscreenPerfExperiment",
@@ -350,7 +350,7 @@ BASE_FEATURE(kInlineFullscreenPerfExperiment,
 
 BASE_FEATURE(kPageActionsMigration,
              "PageActionsMigration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<bool> kPageActionsMigrationEnableAll{
     &kPageActionsMigration, "enable_all", false};
 const base::FeatureParam<bool> kPageActionsMigrationLensOverlay{
@@ -368,10 +368,10 @@ const base::FeatureParam<bool> kPageActionsMigrationOfferNotification{
 
 BASE_FEATURE(kCompositorLoadingAnimations,
              "CompositorLoadingAnimations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kByDateHistoryInSidePanel,
              "ByDateHistoryInSidePanel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace features
diff --git a/chrome/common/chrome_features.cc b/chrome/common/chrome_features.cc
index 1e59593842b49..a4ca40bfd6f6f 100644
--- a/chrome/common/chrome_features.cc
+++ b/chrome/common/chrome_features.cc
@@ -40,7 +40,7 @@ BASE_FEATURE(kAppSpecificNotifications,
 // primitives.
 BASE_FEATURE(kDisableBoostPriority,
              "DisableBoostPriority",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN)
 
 #if BUILDFLAG(IS_MAC)
@@ -55,7 +55,7 @@ BASE_FEATURE(kAppShimRemoteCocoa,
 // https://crbug.com/1080729
 BASE_FEATURE(kAppShimNewCloseBehavior,
              "AppShimNewCloseBehavior",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, app shims try to launch chrome silently if chrome isn't already
 // running, rather than have chrome launch visibly with a new tab/profile
@@ -70,13 +70,13 @@ BASE_FEATURE(kAppShimLaunchChromeSilently,
 // https://crbug.com/938661
 BASE_FEATURE(kAppShimNotificationAttribution,
              "AppShimNotificationAttribution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, app shims used by PWAs will be signed with an ad-hoc signature
 // https://crbug.com/40276068
 BASE_FEATURE(kUseAdHocSigningForWebAppShims,
              "UseAdHocSigningForWebAppShims",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_MAC)
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) || \
@@ -85,17 +85,17 @@ BASE_FEATURE(kUseAdHocSigningForWebAppShims,
 // save address info.
 BASE_FEATURE(kAutofillAddressSurvey,
              "AutofillAddressSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Autofill survey triggered by opening a prompt to
 // save credit card info.
 BASE_FEATURE(kAutofillCardSurvey,
              "AutofillCardSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Autofill survey triggered by opening a prompt to
 // save password info.
 BASE_FEATURE(kAutofillPasswordSurvey,
              "AutofillPasswordSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
@@ -104,14 +104,14 @@ BASE_FEATURE(kAutofillPasswordSurvey,
 // discard memory.
 BASE_FEATURE(kBackgroundModeAllowRestart,
              "BackgroundModeAllowRestart",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
 
 #if BUILDFLAG(IS_ANDROID)
 // Enable boarding pass detector on Chrome Android.
 BASE_FEATURE(kBoardingPassDetector,
              "BoardingPassDetector",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const char kBoardingPassDetectorUrlParamName[] = "boarding_pass_detector_urls";
 const base::FeatureParam<std::string> kBoardingPassDetectorUrlParam(
     &kBoardingPassDetector,
@@ -121,7 +121,7 @@ const base::FeatureParam<std::string> kBoardingPassDetectorUrlParam(
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Enable Borealis on Chrome OS.
-BASE_FEATURE(kBorealis, "Borealis", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kBorealis, "Borealis", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kEnableCertManagementUIV2,
@@ -129,33 +129,33 @@ BASE_FEATURE(kEnableCertManagementUIV2,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kEnableCertManagementUIV2Write,
              "EnableCertManagementUIV2Write",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableCertManagementUIV2EditCerts,
              "EnableCertManagementUIV2EditCerts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Enable project Crostini, Linux VMs on Chrome OS.
-BASE_FEATURE(kCrostini, "Crostini", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kCrostini, "Crostini", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable advanced access controls for Crostini-related features
 // (e.g. restricting VM CLI tools access, restricting Crostini root access).
 BASE_FEATURE(kCrostiniAdvancedAccessControls,
              "CrostiniAdvancedAccessControls",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables infrastructure for generating Ansible playbooks for the default
 // Crostini container from software configurations in JSON schema.
 BASE_FEATURE(kCrostiniAnsibleSoftwareManagement,
              "CrostiniAnsibleSoftwareManagement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables support for sideloading android apps into Arc via crostini.
 BASE_FEATURE(kCrostiniArcSideload,
@@ -166,21 +166,21 @@ BASE_FEATURE(kCrostiniArcSideload,
 // attestationd.
 BASE_FEATURE(kCryptohomeDistributedModel,
              "CryptohomeDistributedModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables cryptohome UserDataAuth interface, a new dbus interface that is
 // fully protobuf and uses libbrillo for dbus instead of the deprecated
 // glib-dbus.
 BASE_FEATURE(kCryptohomeUserDataAuth,
              "CryptohomeUserDataAuth",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for cryptohome UserDataAuth interface. UserDataAuth is a new
 // dbus interface that is fully protobuf and uses libbrillo for dbus instead
 // instead of the deprecated glib-dbus.
 BASE_FEATURE(kCryptohomeUserDataAuthKillswitch,
              "CryptohomeUserDataAuthKillswitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS)
@@ -196,7 +196,7 @@ BASE_FEATURE(kDataLeakPreventionFilesRestriction,
 // removal of the bulk password deletion option from the dialog.
 BASE_FEATURE(kDbdRevampDesktop,
              "DbdRevampDesktop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID)
 
 #if !BUILDFLAG(IS_ANDROID)
@@ -210,7 +210,7 @@ BASE_FEATURE(kPreinstalledWebAppInstallation,
 // If enabled, specified extensions cannot be closed via the task manager.
 BASE_FEATURE(kDesktopTaskManagerEndProcessDisabledForExtension,
              "DesktopTaskManagerEndProcessDisabledForExtension",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 // Controls the enablement of structured metrics on Windows, Linux, and Mac.
@@ -225,7 +225,7 @@ BASE_FEATURE(kDesktopPWAsElidedExtensionsMenu,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -236,7 +236,7 @@ BASE_FEATURE(kDesktopPWAsRunOnOsLogin,
     BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -246,18 +246,18 @@ BASE_FEATURE(kDesktopPWAsPreventClose,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kPwaNavigationCapturingWithScopeExtensions,
              "DesktopPWAsLinkCapturingWithScopeExtensions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Adds a user settings that allows PWAs to be opened with a tab strip.
 BASE_FEATURE(kDesktopPWAsTabStripSettings,
              "DesktopPWAsTabStripSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
 // Controls whether Chrome Apps are supported. See https://crbug.com/1221251.
@@ -302,14 +302,14 @@ BASE_FEATURE(kForcedAppRelaunchOnPlaceholderUpdate,
 // device's location. If this feature is disabled, the GeoLanguage provider is
 // not initialized at startup, and clients calling it will receive an empty list
 // of languages.
-BASE_FEATURE(kGeoLanguage, "GeoLanguage", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kGeoLanguage, "GeoLanguage", base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(ENABLE_GLIC)
 // Controls whether the Glic feature is enabled.
-BASE_FEATURE(kGlic, "Glic", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kGlic, "Glic", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the actor component of Glic is enabled.
-BASE_FEATURE(kGlicActor, "GlicActor", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kGlicActor, "GlicActor", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the Glic feature is always detached.
 BASE_FEATURE(kGlicDetached, "GlicDetached", base::FEATURE_ENABLED_BY_DEFAULT);
@@ -318,7 +318,7 @@ BASE_FEATURE(kGlicDetached, "GlicDetached", base::FEATURE_ENABLED_BY_DEFAULT);
 // testing.
 BASE_FEATURE(kGlicDevelopmentSyncGoogleCookies,
              "GlicDevelopmentCookies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<bool> kGlicStatusIconOpenMenuWithSecondaryClick{
     &kGlic, "open-status-icon-menu-with-secondary-click", true};
@@ -326,7 +326,7 @@ const base::FeatureParam<bool> kGlicStatusIconOpenMenuWithSecondaryClick{
 // Controls whether the simplified version of the border should be used.
 BASE_FEATURE(kGlicForceSimplifiedBorder,
              "GlicForceSimplifiedBorder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kGlicPreLoadingTimeMs{
     &kGlic, "glic-pre-loading-time-ms", 200};
@@ -359,13 +359,13 @@ const base::FeatureParam<std::string> kGlicDefaultHotkey{
 
 BASE_FEATURE(kGlicURLConfig,
              "GlicURLConfig",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string> kGlicGuestURL{&kGlicURLConfig,
                                                     "glic-guest-url", ""};
 
 BASE_FEATURE(kGlicFreURLConfig,
              "GlicFreURLConfig",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(std::string,
                    kGlicFreURL,
                    &kGlicFreURLConfig,
@@ -374,7 +374,7 @@ BASE_FEATURE_PARAM(std::string,
 
 BASE_FEATURE(kGlicCSPConfig,
              "GlicCSPConfig",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // TODO(crbug.com/378951332): Set appropriate default.
 const base::FeatureParam<std::string> kGlicAllowedOriginsOverride{
     &kGlicCSPConfig, "glic-allowed-origins-override",
@@ -405,23 +405,23 @@ const base::FeatureParam<int> kGlicClientUnresponsiveUiMaxTimeMs{
 
 BASE_FEATURE(kGlicKeyboardShortcutNewBadge,
              "GlicKeyboardShortcutNewBadge",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kGlicDebugWebview,
              "GlicDebugWebview",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
-BASE_FEATURE(kGlicScrollTo, "GlicScrollTo", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kGlicScrollTo, "GlicScrollTo", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the Glic UI container can be resized by the user
 BASE_FEATURE(kGlicUserResize,
              "GlicUserResize",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the web client should resize itself to fit the window.
 BASE_FEATURE(kGlicSizingFitWindow,
              "GlicSizingFitWindow",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kGlicWarming, "GlicWarming", base::FEATURE_ENABLED_BY_DEFAULT);
 
@@ -431,12 +431,12 @@ BASE_FEATURE(kGlicFreWarming,
 
 BASE_FEATURE(kGlicWarmMultiple,
              "GlicWarmMultiple",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(ENABLE_GLIC)
 
 BASE_FEATURE(kTabstripComboButton,
              "TabstripComboButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsTabSearchMoving() {
   return base::FeatureList::IsEnabled(features::kTabstripComboButton);
@@ -471,7 +471,7 @@ bool HasTabSearchToolbarButton() {
 // otherwise. This is meant for development and test purposes only.
 BASE_FEATURE(kPrivacyGuideForceAvailable,
              "PrivacyGuideForceAvailable",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Defines if the linked services setting is eligible to be shown in Chrome
 // settings.
@@ -484,7 +484,7 @@ BASE_FEATURE(kLinkedServicesSetting,
 // Chrome.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopDemo,
              "HappinessTrackingSurveysForDesktopDemo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHappinessTrackingSurveysConfiguration,
              "HappinessTrackingSurveysConfiguration",
@@ -498,36 +498,36 @@ const base::FeatureParam<std::string> kHappinessTrackingSurveysHostedUrl{
 // DevTools on Desktop.
 BASE_FEATURE(kHaTSDesktopDevToolsIssuesCOEP,
              "HaTSDesktopDevToolsIssuesCOEP",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for Mixed Content issues in
 // Chrome DevTools on Desktop.
 BASE_FEATURE(kHaTSDesktopDevToolsIssuesMixedContent,
              "HaTSDesktopDevToolsIssuesMixedContent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for same-site cookies
 // issues in Chrome DevTools on Desktop.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopDevToolsIssuesCookiesSameSite,
              "HappinessTrackingSurveysForDesktopDevToolsIssuesCookiesSameSite",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for Heavy Ad issues in
 // Chrome DevTools on Desktop.
 BASE_FEATURE(kHaTSDesktopDevToolsIssuesHeavyAd,
              "HaTSDesktopDevToolsIssuesHeavyAd",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for CSP issues in Chrome
 // DevTools on Desktop.
 BASE_FEATURE(kHaTSDesktopDevToolsIssuesCSP,
              "HaTSDesktopDevToolsIssuesCSP",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for Desktop Privacy Guide.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopPrivacyGuide,
              "HappinessTrackingSurveysForDesktopPrivacyGuide",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<base::TimeDelta>
     kHappinessTrackingSurveysForDesktopPrivacyGuideTime{
         &kHappinessTrackingSurveysForDesktopPrivacyGuide, "settings-time",
@@ -537,7 +537,7 @@ const base::FeatureParam<base::TimeDelta>
 // Settings.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopSettings,
              "HappinessTrackingSurveysForDesktopSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<base::TimeDelta>
     kHappinessTrackingSurveysForDesktopSettingsTime{
         &kHappinessTrackingSurveysForDesktopSettings, "settings-time",
@@ -547,7 +547,7 @@ const base::FeatureParam<base::TimeDelta>
 // Privacy Settings.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopSettingsPrivacy,
              "HappinessTrackingSurveysForDesktopSettingsPrivacy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<bool>
     kHappinessTrackingSurveysForDesktopSettingsPrivacyNoGuide{
         &kHappinessTrackingSurveysForDesktopSettingsPrivacy, "no-guide", false};
@@ -560,12 +560,12 @@ const base::FeatureParam<base::TimeDelta>
 // NTP Modules.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopNtpModules,
              "HappinessTrackingSurveysForDesktopNtpModules",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for History Embeddings.
 BASE_FEATURE(kHappinessTrackingSurveysForHistoryEmbeddings,
              "HappinessTrackingSurveysForHistoryEmbeddings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<base::TimeDelta>
     kHappinessTrackingSurveysForHistoryEmbeddingsDelayTime(
         &kHappinessTrackingSurveysForHistoryEmbeddings,
@@ -574,12 +574,12 @@ const base::FeatureParam<base::TimeDelta>
 
 BASE_FEATURE(kHappinessTrackingSurveysForNtpPhotosOptOut,
              "HappinessTrackingSurveysForrNtpPhotosOptOut",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for Wallpaper Search.
 BASE_FEATURE(kHappinessTrackingSurveysForWallpaperSearch,
              "HappinessTrackingSurveysForWallpaperSearch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Happiness Tracking System for Chrome What's New.
 BASE_FEATURE(kHappinessTrackingSurveysForDesktopWhatsNew,
@@ -593,7 +593,7 @@ const base::FeatureParam<base::TimeDelta>
 // Enables or disables the Happiness Tracking System for Chrome security page.
 BASE_FEATURE(kHappinessTrackingSurveysForSecurityPage,
              "HappinessTrackingSurveysForSecurityPage",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<base::TimeDelta>
     kHappinessTrackingSurveysForSecurityPageTime{
         &kHappinessTrackingSurveysForSecurityPage, "security-page-time",
@@ -612,109 +612,109 @@ const base::FeatureParam<bool>
 // Enables or disables the Happiness Tracking System for the General survey.
 BASE_FEATURE(kHappinessTrackingSystem,
              "HappinessTrackingSystem",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Bluetooth revamp
 // survey.
 BASE_FEATURE(kHappinessTrackingSystemBluetoothRevamp,
              "HappinessTrackingSystemBluetoothRevamp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for the Battery life
 // survey.
 BASE_FEATURE(kHappinessTrackingSystemBatteryLife,
              "HappinessTrackingSystemBatteryLife",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for the Peripherals
 // survey.
 BASE_FEATURE(kHappinessTrackingSystemPeripherals,
              "HappinessTrackingSystemPeripherals",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for the Ent survey.
 BASE_FEATURE(kHappinessTrackingSystemEnt,
              "HappinessTrackingSystemEnt",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for the Stability survey.
 BASE_FEATURE(kHappinessTrackingSystemStability,
              "HappinessTrackingSystemStability",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for the Performance survey.
 BASE_FEATURE(kHappinessTrackingSystemPerformance,
              "HappinessTrackingSystemPerformance",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Onboarding Experience.
 BASE_FEATURE(kHappinessTrackingSystemOnboarding,
              "HappinessTrackingOnboardingExperience",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for ARC Games survey.
 BASE_FEATURE(kHappinessTrackingSystemArcGames,
              "HappinessTrackingArcGames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Audio survey.
 BASE_FEATURE(kHappinessTrackingSystemAudio,
              "HappinessTrackingAudio",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Audio Output
 // Processing.
 BASE_FEATURE(kHappinessTrackingSystemAudioOutputProc,
              "HappinessTrackingAudioOutputProc",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Bluetooth Audio survey.
 BASE_FEATURE(kHappinessTrackingSystemBluetoothAudio,
              "HappinessTrackingBluetoothAudio",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Personalization Avatar survey.
 BASE_FEATURE(kHappinessTrackingPersonalizationAvatar,
              "HappinessTrackingPersonalizationAvatar",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Personalization Screensaver survey.
 BASE_FEATURE(kHappinessTrackingPersonalizationScreensaver,
              "HappinessTrackingPersonalizationScreensaver",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Personalization Wallpaper survey.
 BASE_FEATURE(kHappinessTrackingPersonalizationWallpaper,
              "HappinessTrackingPersonalizationWallpaper",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Media App PDF survey.
 BASE_FEATURE(kHappinessTrackingMediaAppPdf,
              "HappinessTrackingMediaAppPdf",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables or disables the Happiness Tracking System for Camera App survey.
 BASE_FEATURE(kHappinessTrackingSystemCameraApp,
              "HappinessTrackingCameraApp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Photos Experience survey.
 BASE_FEATURE(kHappinessTrackingPhotosExperience,
              "HappinessTrackingPhotosExperience",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for General Camera survey.
 BASE_FEATURE(kHappinessTrackingGeneralCamera,
              "HappinessTrackingGeneralCamera",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Prioritized General Camera survey.
 BASE_FEATURE(kHappinessTrackingGeneralCameraPrioritized,
              "HappinessTrackingGeneralCameraPrioritized",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for OS Settings Search survey.
 BASE_FEATURE(kHappinessTrackingOsSettingsSearch,
              "HappinessTrackingOsSettingsSearch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for Borealis games survey.
 BASE_FEATURE(kHappinessTrackingBorealisGames,
              "HappinessTrackingBorealisGames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for ChromeOS Launcher survey. This
 // survey is enabled to 25% of users.
 BASE_FEATURE(kHappinessTrackingLauncherAppsFinding,
              "HappinessTrackingLauncherAppsFinding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for ChromeOS Launcher survey. This
 // survey is enabled to 75% of users.
 BASE_FEATURE(kHappinessTrackingLauncherAppsNeeding,
              "HappinessTrackingLauncherAppsNeeding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables the Happiness Tracking System for the Office integration.
 BASE_FEATURE(kHappinessTrackingOffice,
              "HappinessTrackingOffice",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables HTTPS-First Mode in a balanced configuration that doesn't warn on
@@ -727,12 +727,12 @@ BASE_FEATURE(kHttpsFirstBalancedMode,
 // possible.
 BASE_FEATURE(kHttpsFirstBalancedModeAutoEnable,
              "HttpsFirstBalancedModeAutoEnable",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables a dialog-based UI for HTTPS-First Mode.
 BASE_FEATURE(kHttpsFirstDialogUi,
              "HttpsFirstDialogUi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the new interstitial UI for HTTPS-First Mode.
 BASE_FEATURE(kHttpsFirstModeInterstitialAugust2024Refresh,
@@ -754,7 +754,7 @@ BASE_FEATURE(kHttpsFirstModeV2ForEngagedSites,
 // HttpsFirstModeV2 or HTTPS-Upgrades is disabled.
 BASE_FEATURE(kHttpsFirstModeV2ForTypicallySecureUsers,
              "HttpsFirstModeV2ForTypicallySecureUsers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables automatically upgrading main frame navigations to HTTPS.
 BASE_FEATURE(kHttpsUpgrades, "HttpsUpgrades", base::FEATURE_ENABLED_BY_DEFAULT);
@@ -771,7 +771,7 @@ BASE_FEATURE(kHttpsFirstModeIncognito,
 // default setting. This feature is dependent on kHttpsFirstModeIncognito.
 BASE_FEATURE(kHttpsFirstModeIncognitoNewSettings,
              "HttpsFirstModeIncognitoNewSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_MAC)
 // Enables immersive fullscreen. The tab strip and toolbar are placed underneath
@@ -815,36 +815,36 @@ BASE_FEATURE(kInSessionPasswordChange,
 // the "Apps & Features" system settings.
 BASE_FEATURE(kIncompatibleApplicationsWarning,
              "IncompatibleApplicationsWarning",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Prevents the installation of non-allowlisted Isolated Web Apps.
 BASE_FEATURE(kIsolatedWebAppAllowlist,
              "IsolatedWebAppAllowlist",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Isolated Web App Developer Mode, which allows developers to
 // install untrusted Isolated Web Apps.
 BASE_FEATURE(kIsolatedWebAppDevMode,
              "IsolatedWebAppDevMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables users on unmanaged devices to install Isolated Web Apps.
 BASE_FEATURE(kIsolatedWebAppUnmanagedInstall,
              "IsolatedWebAppUnmanagedInstall",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Enables users to install isolated web apps in managed guest sessions.
 BASE_FEATURE(kIsolatedWebAppManagedGuestSessionInstall,
              "IsolatedWebAppManagedGuestSessionInstall",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables bundle cache for isolated web apps in kiosk and managed guest
 // session.
 BASE_FEATURE(kIsolatedWebAppBundleCache,
              "IsolatedWebAppBundleCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 // When enabled, allows other features to use the k-Anonymity Service.
@@ -904,7 +904,7 @@ BASE_FEATURE(kKAnonymityServiceStorage,
 #if BUILDFLAG(IS_LINUX) && !BUILDFLAG(IS_CHROMEOS)
 BASE_FEATURE(kLinuxLowMemoryMonitor,
              "LinuxLowMemoryMonitor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Values taken from the low-memory-monitor documentation and also apply to the
 // portal API:
 // https://hadess.pages.freedesktop.org/low-memory-monitor/gdbus-org.freedesktop.LowMemoryMonitor.html
@@ -917,7 +917,7 @@ constexpr base::FeatureParam<int> kLinuxLowMemoryMonitorCriticalLevel{
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
 BASE_FEATURE(kListWebAppsSwitch,
              "ListWebAppsSwitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_MAC)
@@ -951,7 +951,7 @@ BASE_FEATURE(kSystemNotifications,
 // Enables the usage of Apple's new Notification API.
 BASE_FEATURE(kNewMacNotificationAPI,
              "NewMacNotificationAPI",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_MAC)
 
 #if BUILDFLAG(IS_CHROMEOS)
@@ -963,14 +963,14 @@ BASE_FEATURE(kNewFilesPolicyUX,
 
 // When kNoReferrers is enabled, most HTTP requests will provide empty
 // referrers instead of their ordinary behavior.
-BASE_FEATURE(kNoReferrers, "NoReferrers", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kNoReferrers, "NoReferrers", base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 // Changes behavior of requireInteraction for notifications. Instead of staying
 // on-screen until dismissed, they are instead shown for a very long time.
 BASE_FEATURE(kNotificationDurationLongForRequireInteraction,
              "NotificationDurationLongForRequireInteraction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN)
 
 #if BUILDFLAG(IS_ANDROID)
@@ -982,7 +982,7 @@ BASE_FEATURE(kOfflineAutoFetch,
 #if BUILDFLAG(ENABLE_EXTENSIONS_CORE)
 BASE_FEATURE(kOnConnectNative,
              "OnConnectNative",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_ANDROID)
@@ -997,17 +997,17 @@ BASE_FEATURE(kOomIntervention,
 // after acquiry of the singleton.
 BASE_FEATURE(kOverridePrefetchOnSingleton,
              "OverridePrefetchOnSingleton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Skips requesting the Parent Access Code for reauth.
 BASE_FEATURE(kSkipParentAccessCodeForReauth,
              "SkipParentAccessCodeForReauth",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable support for "Plugin VMs" on Chrome OS.
-BASE_FEATURE(kPluginVm, "PluginVm", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kPluginVm, "PluginVm", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Allows Chrome to do preconnect when prerender fails.
@@ -1020,25 +1020,25 @@ BASE_FEATURE(kPrerenderFallbackToPreconnect,
 // preview.
 BASE_FEATURE(kPrintPreviewCrosPrimary,
              "PrintPreviewCrosPrimary",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, use managed per-printer print job options set via
 // DevicePrinters/PrinterBulkConfiguration policy in print preview.
 BASE_FEATURE(kUseManagedPrintJobOptionsInPrintPreview,
              "UseManagedPrintJobOptionsInPrintPreview",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables or disables push subscriptions keeping Chrome running in the
 // background when closed.
 BASE_FEATURE(kPushMessagingBackgroundMode,
              "PushMessagingBackgroundMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Shows a confirmation dialog when updates to a PWAs icon has been detected.
 BASE_FEATURE(kPwaUpdateDialogForIcon,
              "PwaUpdateDialogForIcon",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using quiet prompts for notification permission requests.
 BASE_FEATURE(kQuietNotificationPrompts,
@@ -1049,7 +1049,7 @@ BASE_FEATURE(kQuietNotificationPrompts,
 // in: chrome://web-app-internals
 BASE_FEATURE(kRecordWebAppDebugInfo,
              "RecordWebAppDebugInfo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables notification permission revocation for abusive origins.
 BASE_FEATURE(kAbusiveNotificationPermissionRevocation,
@@ -1060,7 +1060,7 @@ BASE_FEATURE(kAbusiveNotificationPermissionRevocation,
 // Enables permanent removal of Legacy Supervised Users on startup.
 BASE_FEATURE(kRemoveSupervisedUsersOnStartup,
              "RemoveSupervisedUsersOnStartup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(ENABLE_EXTENSIONS)
@@ -1100,7 +1100,7 @@ BASE_FEATURE(kSafetyHubFollowup,
 // Enables Safety Hub organic HaTS survey on Android.
 BASE_FEATURE(kSafetyHubAndroidOrganicSurvey,
              "SafetyHubAndroidOrganicSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<std::string> kSafetyHubAndroidOrganicTriggerId(
     &kSafetyHubAndroidOrganicSurvey,
@@ -1111,7 +1111,7 @@ constexpr base::FeatureParam<std::string> kSafetyHubAndroidOrganicTriggerId(
 // Enables Safety Hub HaTS survey on Android.
 BASE_FEATURE(kSafetyHubAndroidSurvey,
              "SafetyHubAndroidSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<std::string> kSafetyHubAndroidTriggerId(
     &kSafetyHubAndroidSurvey,
@@ -1121,34 +1121,34 @@ constexpr base::FeatureParam<std::string> kSafetyHubAndroidTriggerId(
 // Enables new triggers for the Safety Hub HaTS survey on Android.
 BASE_FEATURE(kSafetyHubAndroidSurveyV2,
              "SafetyHubAndroidSurveyV2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Weak and Reused passwords in Safety Hub.
 BASE_FEATURE(kSafetyHubWeakAndReusedPasswords,
              "SafetyHubWeakAndReusedPasswords",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the local passwords module in Safety Hub.
 BASE_FEATURE(kSafetyHubLocalPasswordsModule,
              "SafetyHubLocalPasswordsModule",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 #if !BUILDFLAG(IS_ANDROID)
 // Enables Safety Hub services on start up feature.
 BASE_FEATURE(kSafetyHubServicesOnStartUp,
              "SafetyHubServicesOnStartUp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the Trust Safety Sentiment Survey for Safety Hub.
 BASE_FEATURE(kSafetyHubTrustSafetySentimentSurvey,
              "TrustSafetySentimentSurveyForSafetyHub",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables the A/B Experiment Survey for Safety Hub.
 BASE_FEATURE(kSafetyHubHaTSOneOffSurvey,
              "SafetyHubHaTSOneOffSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string>
     kHatsSurveyTriggerSafetyHubOneOffExperimentControlTriggerId{
         &kSafetyHubHaTSOneOffSurvey, "safety-hub-ab-control-trigger-id", ""};
@@ -1258,7 +1258,7 @@ BASE_FEATURE(kSCTAuditing, "SCTAuditing", base::FEATURE_ENABLED_BY_DEFAULT);
 #else
 // This requires backend infrastructure and a data collection policy.
 // Non-Chrome builds should not use Chrome's infrastructure.
-BASE_FEATURE(kSCTAuditing, "SCTAuditing", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSCTAuditing, "SCTAuditing", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 constexpr base::FeatureParam<double> kSCTAuditingSamplingRate{
     &kSCTAuditing, "sampling_rate", 0.0001};
@@ -1298,7 +1298,7 @@ const base::FeatureParam<base::TimeDelta> kSCTLogMaxIngestionRandomDelay{
 BASE_FEATURE(kSitePerProcess,
              "SitePerProcess",
 #if BUILDFLAG(IS_ANDROID) && !BUILDFLAG(ENABLE_ANDROID_SITE_ISOLATION)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -1328,13 +1328,13 @@ BASE_FEATURE(kSkyVaultV2, "SkyVaultV2", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the SkyVault V3 changes, which improve the resilience of file uploads
 // and error handling.
-BASE_FEATURE(kSkyVaultV3, "SkyVaultV3", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSkyVaultV3, "SkyVaultV3", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables SmartDim on Chrome OS.
-BASE_FEATURE(kSmartDim, "SmartDim", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSmartDim, "SmartDim", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables chrome://sys-internals.
-BASE_FEATURE(kSysInternals, "SysInternals", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSysInternals, "SysInternals", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables or disables TPM firmware update capability on Chrome OS.
 BASE_FEATURE(kTPMFirmwareUpdate,
@@ -1347,7 +1347,7 @@ BASE_FEATURE(kTPMFirmwareUpdate,
 // packet.
 BASE_FEATURE(kSupportToolScreenshot,
              "SupportToolScreenshot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_WIN)
@@ -1358,7 +1358,7 @@ BASE_FEATURE(kSupportToolScreenshot,
 // required to start the browser two times to fully enable or disable it.
 BASE_FEATURE(kThirdPartyModulesBlocking,
              "ThirdPartyModulesBlocking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Disable downloads of unsafe file types over insecure transports if initiated
@@ -1372,7 +1372,7 @@ BASE_FEATURE(kTreatUnsafeDownloadsAsActive,
 // Enables surveying of users of Trust & Safety features with HaTS.
 BASE_FEATURE(kTrustSafetySentimentSurvey,
              "TrustSafetySentimentSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The minimum and maximum time after a user has interacted with a Trust and
 // Safety they are eligible to be surveyed.
 const base::FeatureParam<base::TimeDelta>
@@ -1437,7 +1437,7 @@ const base::FeatureParam<base::TimeDelta>
 // Safety features, using HaTS.
 BASE_FEATURE(kTrustSafetySentimentSurveyV2,
              "TrustSafetySentimentSurveyV2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The minimum and maximum time after a user has interacted with a Trust and
 // Safety feature that they are eligible to be surveyed.
 const base::FeatureParam<base::TimeDelta>
@@ -1560,7 +1560,7 @@ BASE_FEATURE(kWebAppDontAddExistingAppsToSync,
 
 BASE_FEATURE(kWebAppManifestIconUpdating,
              "WebAppManifestIconUpdating",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID)
 
 BASE_FEATURE(kWebAppManifestPolicyAppIdentityUpdate,
@@ -1581,7 +1581,7 @@ BASE_FEATURE(kWebShare, "WebShare", base::FEATURE_ENABLED_BY_DEFAULT);
 // embedder-specified heuristics.
 BASE_FEATURE(kRestrictedWebUICodeCache,
              "RestrictedWebUICodeCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Defines a comma-separated list of resource names able to use the generated
 // code cache when RestrictedWebUICodeCache is enabled.
@@ -1593,7 +1593,7 @@ const base::FeatureParam<std::string> kRestrictedWebUICodeCacheResources{
 // package in the image.
 BASE_FEATURE(kUmaStorageDimensions,
              "UmaStorageDimensions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_WIN)
@@ -1625,20 +1625,20 @@ BASE_FEATURE(kSupportsRtcWakeOver24Hours,
 // go/cros-eventbasedlogcollection-dd.
 BASE_FEATURE(kEventBasedLogUpload,
              "EventBasedLogUpload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature to enable periodic log upload migration. This includes using new
 // mechanism for collecting, exporting and uploading logs. See
 // go/legacy-log-upload-migration.
 BASE_FEATURE(kPeriodicLogUploadMigration,
              "PeriodicLogUploadMigration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature to enable periodic log K12 user age classification. See
 // go/teachers-on-chromeos-data.
 BASE_FEATURE(kK12AgeClassificationMetricsProvider,
              "K12AgeClassificationMetricsProvider",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 // A feature to disable shortcut creation from the Chrome UI, and instead use
diff --git a/components/autofill/core/common/autofill_features.cc b/components/autofill/core/common/autofill_features.cc
index 04f01c8006e7e..b52aa31b88200 100644
--- a/components/autofill/core/common/autofill_features.cc
+++ b/components/autofill/core/common/autofill_features.cc
@@ -13,7 +13,7 @@ namespace autofill::features {
 // TODO(crbug.com/40266699) Remove once launched.
 BASE_FEATURE(kAutofillAcrossIframesIos,
              "AutofillAcrossIframesIos",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Throttles child frame extraction to a maximum number of child frames that
 // can be extracted by applying the following rules: (1) remove the child frames
@@ -21,7 +21,7 @@ BASE_FEATURE(kAutofillAcrossIframesIos,
 // frames on other forms once the limit is reached across forms.
 BASE_FEATURE(kAutofillAcrossIframesIosThrottling,
              "AutofillAcrossIframesIosThrottling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // LINT.ThenChange(//components/autofill/ios/form_util/resources/autofill_form_features.ts:autofill_across_iframes_ios)
 
 // Controls whether to trigger form extraction when detecting a form activity on
@@ -38,7 +38,7 @@ BASE_FEATURE(kAutofillAcrossIframesIosTriggerFormExtraction,
 // TODO(crbug.com/381994105): Cleanup when launched.
 BASE_FEATURE(kAutofillAddressSuggestionsOnTyping,
              "AutofillAddressSuggestionsOnTyping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature flag to control the displaying of an ongoing hats survey that
 // measures users perception of Autofill. Differently from other surveys,
@@ -49,19 +49,19 @@ BASE_FEATURE(kAutofillAddressSuggestionsOnTyping,
 // across quarters.
 BASE_FEATURE(kAutofillAddressUserPerceptionSurvey,
              "AutofillAddressUserPerceptionSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, no GeoIp requirements are imposed for AutfillAi. Intended for
 // Dogfood and testing only.
 BASE_FEATURE(kAutofillAiIgnoreGeoIp,
              "AutofillAiIgnoreGeoIp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the client may trigger the server model for AutofillAI type
 // predictions.
 BASE_FEATURE(kAutofillAiServerModel,
              "AutofillAiServerModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The maximum duration for which an AutofillAI server model response is kept in
 // the local cache. NOTE: It is advisable to choose a value that is at least as
@@ -99,7 +99,7 @@ const base::FeatureParam<bool> kAutofillAiServerModelUseCacheResults{
 // strings DD/MM/YYYY and D/M/YYYY.
 BASE_FEATURE(kAutofillAiVoteForFormatStringsFromSingleFields,
              "AutofillAiVoteForFormatStringsFromSingleFields",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, votes for date format strings from multiple fields are uploaded.
 // For example, <input type=text value=31> <input type=text value=12> <input
@@ -107,13 +107,13 @@ BASE_FEATURE(kAutofillAiVoteForFormatStringsFromSingleFields,
 // respectively.
 BASE_FEATURE(kAutofillAiVoteForFormatStringsFromMultipleFields,
              "AutofillAiVoteForFormatStringsFromMultipleFields",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the second iteration AutofillAI.
 // This feature is independent of `autofill_ai::kAutofillAi`.
 BASE_FEATURE(kAutofillAiWithDataSchema,
              "AutofillAiWithDataSchema",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This parameter enables adding an experiment id to requests to the Autofill
 // to enable Autofill AI predictions. The experiment id is not used for other
@@ -124,37 +124,37 @@ const base::FeatureParam<int> kAutofillAiWithDataSchemaServerExperimentId{
 // Same as `kAutofillAddressUserPerceptionSurvey` but for credit card forms.
 BASE_FEATURE(kAutofillCreditCardUserPerceptionSurvey,
              "AutofillCreditCardUserPerceptionSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature flag controlling the display of surveys when a user does not
 // accept an Autofill suggestion. The goal is to understand the reason and work
 // towards improving acceptance.
 BASE_FEATURE(kAutofillAddressUserDeclinedSuggestionSurvey,
              "AutofillAddressUserDeclinedSuggestionSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature flag controlling the deduplication of GAS addresses. When disabled
 // GAS addresses will never be deleted as part of the deduplication flow.
 // TODO(crbug.com/357074792): Remove when launched.
 BASE_FEATURE(kAutofillDeduplicateAccountAddresses,
              "AutofillDeduplicateAccountAddresses",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for Autofill filling.
 BASE_FEATURE(kAutofillDisableFilling,
              "AutofillDisableFilling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for Autofill address import.
 BASE_FEATURE(kAutofillDisableAddressImport,
              "AutofillDisableAddressImport",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, autofill will use the new ranking algorithm for address profile
 // autofill suggestions.
 BASE_FEATURE(kAutofillEnableRankingFormulaAddressProfiles,
              "AutofillEnableRankingFormulaAddressProfiles",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The half life applied to the use count of profiles in the ranking formula.
 const base::FeatureParam<int>
     kAutofillRankingFormulaAddressProfilesUsageHalfLife{
@@ -165,7 +165,7 @@ const base::FeatureParam<int>
 // autofill suggestions.
 BASE_FEATURE(kAutofillEnableRankingFormulaCreditCards,
              "AutofillEnableRankingFormulaCreditCards",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The half life applied to the use count.
 const base::FeatureParam<int> kAutofillRankingFormulaCreditCardsUsageHalfLife{
     &kAutofillEnableRankingFormulaCreditCards,
@@ -183,32 +183,32 @@ const base::FeatureParam<int> kAutofillRankingFormulaVirtualCardBoostHalfLife{
 // address storage.
 BASE_FEATURE(kAutofillEnableAccountStorageForIneligibleCountries,
              "AutofillEnableAccountStorageForIneligibleCountries",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables a new implementation for address field parsing that is based on
 // backtracking.
 BASE_FEATURE(kAutofillEnableAddressFieldParserNG,
              "AutofillEnableAddressFieldParserNG",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls if the heuristic field parsing utilizes shared labels.
 // TODO(crbug.com/40741721): Remove once shared labels are launched.
 BASE_FEATURE(kAutofillEnableSupportForParsingWithSharedLabels,
              "AutofillEnableSupportForParsingWithSharedLabels",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls if heuristic field parsing should be performed on email-only forms
 // without an enclosing form tag.
 // TODO(crbug.com/40285735): Remove when/if launched.
 BASE_FEATURE(kAutofillEnableEmailHeuristicOutsideForms,
              "AutofillEnableEmailHeuristicOutsideForms",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Control if Autofill supports German transliteration.
 // TODO(crbug.com/328968064): Remove when/if launched.
 BASE_FEATURE(kAutofillEnableGermanTransliteration,
              "AutofillEnableGermanTransliteration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables a couple of improvements to credit card expiration date handling:
 // - The autocomplete attribute values are rationalized with format strings
@@ -217,14 +217,14 @@ BASE_FEATURE(kAutofillEnableGermanTransliteration,
 // TODO(crbug.com/40266396): Remove once launched.
 BASE_FEATURE(kAutofillEnableExpirationDateImprovements,
              "AutofillEnableExpirationDateImprovements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether to save the first number in a form with multiple phone
 // numbers instead of aborting the import.
 // TODO(crbug.com/40742746) Remove once launched.
 BASE_FEATURE(kAutofillEnableImportWhenMultiplePhoneNumbers,
              "AutofillEnableImportWhenMultiplePhoneNumbers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the precedence is given to the field label over the name when
 // they match different types. Applied only for parsing of address forms in
@@ -232,13 +232,13 @@ BASE_FEATURE(kAutofillEnableImportWhenMultiplePhoneNumbers,
 // TODO(crbug.com/40735892): Remove once launched.
 BASE_FEATURE(kAutofillEnableLabelPrecedenceForTurkishAddresses,
              "AutofillEnableLabelPrecedenceForTurkishAddresses",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, Autofill will help users fill in loyalty card details.
 // TODO(crbug.com/395831853): Remove once launched.
 BASE_FEATURE(kAutofillEnableLoyaltyCardsFilling,
              "AutofillEnableLoyaltyCardsFilling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, extracts <input type=date>, which may be filled by Autofill AI.
 // This is a kill switch.
@@ -255,7 +255,7 @@ BASE_FEATURE(kAutofillExtractInputDate,
 // TODO(crbug.com/40196220): Remove once launched.
 BASE_FEATURE(kAutofillExtractOnlyNonAdFrames,
              "AutofillExtractOnlyNonAdFrames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, focusing on an autofilled field that was traditionally filled
 // with address data (meaning filled with the value of their classified type)
@@ -263,7 +263,7 @@ BASE_FEATURE(kAutofillExtractOnlyNonAdFrames,
 // TODO(crbug.com/339543182): Remove when launched.
 BASE_FEATURE(kAutofillAddressFieldSwapping,
              "AutofillAddressFieldSwapping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, address field swapping suggestions will not include a
 // suggestion matching the field's current value. This decreases noises in the
@@ -271,21 +271,21 @@ BASE_FEATURE(kAutofillAddressFieldSwapping,
 // TODO(crbug.com/381531027): Remove when launched.
 BASE_FEATURE(kAutofillImproveAddressFieldSwapping,
              "AutofillImproveAddressFieldSwapping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, new `negative_pattern` regex values will be used
 // in order to reduce false positive classifications of city fields.
 // TODO(crbug.com/330508437): Clean up when launched.
 BASE_FEATURE(kAutofillImproveCityFieldClassification,
              "AutofillImproveCityFieldClassification",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, Autofill will try to reuse the result of previous form
 // extractions in subsequent functions that needs the form extracted, provided
 // we have guarantees that in the meantime the form couldn't have changed.
 BASE_FEATURE(kAutofillOptimizeFormExtraction,
              "AutofillOptimizeFormExtraction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Fixes the overloaded meaning of FormFieldData::value (current value of a
 // field and initial value of a field): if enabled, AutofillField::value() takes
@@ -319,27 +319,27 @@ BASE_FEATURE(kAutofillFixCurrentValueInImport,
 // TODO(crbug.com/354175563): Remove when launched.
 BASE_FEATURE(kAutofillPaymentsFieldSwapping,
              "AutofillPaymentsFieldSwapping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, and upon receiving a signal that a select element has been
 // edited by the user, BrowserAutofillManager will record this correction, which
 // will affect many correctness metrics.
 BASE_FEATURE(kAutofillRecordCorrectionOfSelectElements,
              "AutofillRecordCorrectionOfSelectElements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, chrome will support home and work addresses from account.
 // TODO: crbug.com/397940269 - Clean up when launched.
 BASE_FEATURE(kAutofillEnableSupportForHomeAndWork,
              "AutofillEnableSupportForHomeAndWork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the autofill suggestion labels are more descriptive and
 // relevant.
 // TODO(crbug.com/380273791): Cleanup when launched.
 BASE_FEATURE(kAutofillImprovedLabels,
              "AutofillImprovedLabels",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether main text should also be improved or not.
 // TODO(crbug.com/380273791): Clean up when launched.
@@ -379,7 +379,7 @@ BASE_FEATURE(kAutofillIncludeUrlInCrowdsourcing,
 // DOM_MUTATION_AFTER_AUTOFILL, even for non-password forms.
 BASE_FEATURE(kAutofillAcceptDomMutationAfterAutofillSubmission,
              "AutofillAcceptDomMutationAfterAutofillSubmission",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Removes logic that resets form submission tracking data upon receiving a
 // FORM_SUBMISSION or PROBABLE_FORM_SUBMISSION signal. Also, fixes submission
@@ -387,14 +387,14 @@ BASE_FEATURE(kAutofillAcceptDomMutationAfterAutofillSubmission,
 // TODO(crbug.com/40281981): Remove when launched.
 BASE_FEATURE(kAutofillFixFormTracking,
              "AutofillFixFormTracking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Uses AutofillAgent::GetSubmittedForm() in HTML submissions.
 // See `AutofillAgent::GetSubmittedForm()` for more documentation.
 // TODO(crbug.com/40281981): Remove when launched.
 BASE_FEATURE(kAutofillUseSubmittedFormInHtmlSubmission,
              "AutofillUseSubmittedFormInHtmlSubmission",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Replaces blink::WebFormElementObserver usage in FormTracker by updated logic
 // for tracking the disappearance of forms as well as other submission
@@ -403,14 +403,14 @@ BASE_FEATURE(kAutofillUseSubmittedFormInHtmlSubmission,
 // TODO(crbug.com/40281981): Remove when launched.
 BASE_FEATURE(kAutofillPreferSavedFormAsSubmittedForm,
              "AutofillPreferSavedFormAsSubmittedForm",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows the import of an Autofill profile if duplicate fields were present
 // with identical field values.
 // TODO(crbug.com/395855125): Remove when launched.
 BASE_FEATURE(kAutofillRelaxAddressImport,
              "AutofillRelaxAddressImport",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Replaces blink::WebFormElementObserver usage in FormTracker by updated logic
 // for tracking the disappearance of forms as well as other submission
@@ -418,44 +418,44 @@ BASE_FEATURE(kAutofillRelaxAddressImport,
 // TODO(crbug.com/40281981): Remove when launched.
 BASE_FEATURE(kAutofillReplaceFormElementObserver,
              "AutofillReplaceFormElementObserver",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, FormFieldData::is_visible is a heuristic for actual visibility.
 // Otherwise, it's an alias for FormFieldData::is_focusable.
 // TODO(crbug.com/324199622) When abandoned, remove FormFieldData::is_visible.
 BASE_FEATURE(kAutofillDetectFieldVisibility,
              "AutofillDetectFieldVisibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, new heuristics are applied for disambiguating multiple possible
 // types in a form field. Otherwise, only the already established heuristic for
 // disambiguating address and credit card names is used.
 BASE_FEATURE(kAutofillDisambiguateContradictingFieldTypes,
              "AutofillDisambiguateContradictingFieldTypes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, whenever form controls are removed from the DOM, the ChromeClient
 // is informed about this. This enables Autofill to trigger a reparsing of
 // forms.
 BASE_FEATURE(kAutofillDetectRemovedFormControls,
              "AutofillDetectRemovedFormControls",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Replaces cached web elements in AutofillAgent and FormTracker by their
 // renderer ids.
 BASE_FEATURE(kAutofillReplaceCachedWebElementsByRendererIds,
              "AutofillReplaceCachedWebElementsByRendererIds",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using a custom address model for France, overriding the legacy one.
 BASE_FEATURE(kAutofillUseFRAddressModel,
              "AutofillUseFRAddressModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using a custom address model for India, overriding the legacy one.
 BASE_FEATURE(kAutofillUseINAddressModel,
              "AutofillUseINAddressModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using a custom address model for Italy, overriding the legacy one.
 BASE_FEATURE(kAutofillUseITAddressModel,
@@ -465,12 +465,12 @@ BASE_FEATURE(kAutofillUseITAddressModel,
 // Enables using a custom address model for Japan, overriding the legacy one.
 BASE_FEATURE(kAutofillSupportPhoneticNameForJP,
              "AutofillSupportPhoneticNameForJP",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using custom name model with last name prefixes support.
 BASE_FEATURE(kAutofillSupportLastNamePrefix,
              "AutofillSupportLastNamePrefix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch that ignores duplicate AskForValuesToFill() which in
 // AutofillAgent as to work around the broken focus-event handling.
@@ -483,7 +483,7 @@ BASE_FEATURE(kAutofillThrottleAskForValuesToFill,
 // legacy one.
 BASE_FEATURE(kAutofillUseNLAddressModel,
              "AutofillUseNLAddressModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables using a custom address model for Poland, overriding the legacy one.
 BASE_FEATURE(kAutofillUsePLAddressModel,
@@ -494,14 +494,14 @@ BASE_FEATURE(kAutofillUsePLAddressModel,
 // any of the negative patterns matched.
 BASE_FEATURE(kAutofillUseNegativePatternForAllAttributes,
              "AutofillUseNegativePatternForAllAttributes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, all behaviours related to the on-device machine learning
 // model for field type predictions will be guarded.
 // TODO(crbug.com/40276177): Remove when launched.
 BASE_FEATURE(kAutofillModelPredictions,
              "AutofillModelPredictions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When true, use the machine learning model as the active `HeuristicSource`,
 // else use the source provided by `kAutofillParsingPatternActiveSource`.
@@ -519,7 +519,7 @@ BASE_FEATURE_PARAM(bool,
 // be overwritten if it's classified as a placeholder.
 BASE_FEATURE(kAutofillOverwritePlaceholdersOnly,
              "AutofillOverwritePlaceholdersOnly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, a pre-filled field will not be filled.
 BASE_FEATURE(kAutofillSkipPreFilledFields,
@@ -530,7 +530,7 @@ BASE_FEATURE(kAutofillSkipPreFilledFields,
 // TODO(crbug.com/40158074): Cleanup when launched.
 BASE_FEATURE(kAutofillPageLanguageDetection,
              "AutofillPageLanguageDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, we check whether a field's label or placeholder has the format
 // of a valid email address. If it does, we use that as a signal that the field
@@ -538,7 +538,7 @@ BASE_FEATURE(kAutofillPageLanguageDetection,
 // TODO(crbug.com/361560365): Clean up when launched.
 BASE_FEATURE(kAutofillParseEmailLabelAndPlaceholder,
              "AutofillParseEmailLabelAndPlaceholder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If the feature is enabled, before triggering suggestion acceptance, the row
 // view checks that a substantial portion of its content was visible for some
@@ -547,7 +547,7 @@ BASE_FEATURE(kAutofillParseEmailLabelAndPlaceholder,
 // emitting of "Autofill.AcceptedSuggestionDesktopRowViewVisibleEnough".
 BASE_FEATURE(kAutofillPopupDontAcceptNonVisibleEnoughSuggestion,
              "AutofillPopupDontAcceptNonVisibleEnoughSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/334909042): Remove after cleanup.
 // If the feature is enabled, the Autofill popup widget is initialized with
@@ -558,7 +558,7 @@ BASE_FEATURE(kAutofillPopupDontAcceptNonVisibleEnoughSuggestion,
 // affect their functionality.
 BASE_FEATURE(kAutofillPopupZOrderSecuritySurface,
              "AutofillPopupZOrderSecuritySurface",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether Autofill may fill across origins.
 // In payment forms, the cardholder name field is often on the merchant's origin
@@ -570,7 +570,7 @@ BASE_FEATURE(kAutofillPopupZOrderSecuritySurface,
 // TODO(crbug.com/1304721): Enable this feature.
 BASE_FEATURE(kAutofillSharedAutofill,
              "AutofillSharedAutofill",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If this feature is enabled, the AddressFieldParser does NOT try to parse
 // address lines once it has found a street name and house number or other
@@ -582,19 +582,19 @@ BASE_FEATURE(kAutofillSharedAutofill,
 // TODO(crbug.com/40266693) Remove once launched.
 BASE_FEATURE(kAutofillStructuredFieldsDisableAddressLines,
              "AutofillStructuredFieldsDisableAddressLines",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows silent profile updates even when the profile import requirements are
 // not met.
 BASE_FEATURE(kAutofillSilentProfileUpdateForInsufficientImport,
              "AutofillSilentProfileUpdateForInsufficientImport",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls an ablation study in which autofill for addresses and payment data
 // can be suppressed.
 BASE_FEATURE(kAutofillEnableAblationStudy,
              "AutofillEnableAblationStudy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The following parameters are only effective if the study is enabled.
 // If "enabled_for_addresses" is true this means that the ablation study is
 // enabled for addresses meaning that autofill may be disabled on some forms.
@@ -642,14 +642,14 @@ const base::FeatureParam<bool> kAutofillAblationStudyIsDryRun{
 // TODO(crbug.com/40249216). Clean up when launched.
 BASE_FEATURE(kAutofillEnableFillingPhoneCountryCodesByAddressCountryCodes,
              "AutofillEnableFillingPhoneCountryCodesByAddressCountryCodes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls autofill popup style, if enabled it becomes more prominent,
 // i.e. its shadow becomes more emphasized, position is also updated.
 // TODO(crbug.com/40235454): Remove once the experiment is over.
 BASE_FEATURE(kAutofillMoreProminentPopup,
              "AutofillMoreProminentPopup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kAutofillMoreProminentPopupMaxOffsetToCenterParam{
     &kAutofillMoreProminentPopup, "max_offset_to_center_px", 92};
 
@@ -675,7 +675,7 @@ const base::FeatureParam<int> kAutofillLogUKMEventsWithSamplingOnSessionRate{
 // `kAutofillAndroidDisableSuggestionsOnJSFocus`
 BASE_FEATURE(kAutofillAndroidDisableSuggestionsOnJSFocus,
              "AutofillAndroidDisableSuggestionsOnJSFocus",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, FormFieldParser::MatchesRegexWithCache tries to avoid
 // re-computing whether a regex matches an input string by caching the result.
@@ -690,7 +690,7 @@ const base::FeatureParam<int>
 
 BASE_FEATURE(kAutofillUKMExperimentalFields,
              "AutofillUKMExperimentalFields",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string> kAutofillUKMExperimentalFieldsBucket0{
     &kAutofillUKMExperimentalFields, "autofill_experimental_regex_bucket0", ""};
 const base::FeatureParam<std::string> kAutofillUKMExperimentalFieldsBucket1{
@@ -706,7 +706,7 @@ const base::FeatureParam<std::string> kAutofillUKMExperimentalFieldsBucket4{
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kAutofillGreekRegexes,
              "AutofillGreekRegexes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the text of a <select> element's first <option> is considered
 // as a potential label.
@@ -714,7 +714,7 @@ BASE_FEATURE(kAutofillGreekRegexes,
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kAutofillInferLabelFromDefaultSelectText,
              "AutofillInferLabelFromDefaultSelectText",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, votes are uploaded already when the AutofillDriver becomes
 // inactive, i.e., the underlying frame enters the bfcache. Otherwise, a
@@ -725,35 +725,35 @@ BASE_FEATURE(kAutofillInferLabelFromDefaultSelectText,
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kAutofillVoteWhenInactive,
              "AutofillVoteWhenInactive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the successful first time creation
 // flow.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressAcceptedFirstTimeCreateSurvey,
              "PlusAddressAcceptedFirstTimeCreateSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the declined the first plus
 // address creation flow.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressDeclinedFirstTimeCreateSurvey,
              "PlusAddressDeclinedFirstTimeCreateSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the user fills a plus address
 // after triggering autofill manually.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressFilledPlusAddressViaManualFallbackSurvey,
              "PlusAddressFilledPlusAddressViaManualFallbackSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the user creates a 3rd+ plus
 // address.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressUserCreatedMultiplePlusAddressesSurvey,
              "PlusAddressUserCreatedMultiplePlusAddressesSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the user creates a plus address
 // triggering the popup via the Chrome context menu on Desktop or via the
@@ -761,21 +761,21 @@ BASE_FEATURE(kPlusAddressUserCreatedMultiplePlusAddressesSurvey,
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressUserCreatedPlusAddressViaManualFallbackSurvey,
              "PlusAddressUserCreatedPlusAddressViaManualFallbackSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the user chooses to fill an email
 // when a plus address suggestion is also offered in the Autofill popup.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressUserDidChooseEmailOverPlusAddressSurvey,
              "PlusAddressUserDidChooseEmailOverPlusAddressSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, a HaTS survey is shown after the user chooses to fill a plus
 // address when an email suggestion is also offered in the Autofill popup.
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kPlusAddressUserDidChoosePlusAddressOverEmailSurvey,
              "PlusAddressUserDidChoosePlusAddressOverEmailSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the placeholder is not considered a label fallback on the
 // renderer side anymore. Instead, local heuristic will match regexes against
@@ -786,7 +786,7 @@ BASE_FEATURE(kPlusAddressUserDidChoosePlusAddressOverEmailSurvey,
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kAutofillBetterLocalHeuristicPlaceholderSupport,
              "AutofillBetterLocalHeuristicPlaceholderSupport",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the address add/edit editor in the payments request would be
 // removed and instead, the address editor from the settings will be used.
@@ -794,7 +794,7 @@ BASE_FEATURE(kAutofillBetterLocalHeuristicPlaceholderSupport,
 COMPONENT_EXPORT(AUTOFILL)
 BASE_FEATURE(kUseSettingsAddressEditorInPaymentsRequest,
              "UseSettingsAddressEditorInPaymentsRequest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // If enabled, other apps can open the Autofill Options in Chrome.
@@ -806,7 +806,7 @@ BASE_FEATURE(kAutofillDeepLinkAutofillOptions,
 // fully or partially obscuring the Chrome window.
 BASE_FEATURE(kAutofillEnableSecurityTouchEventFilteringAndroid,
              "AutofillEnableSecurityTouchEventFilteringAndroid",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Autofill Services can query whether Chrome provides forms as
 // virtual view structures to third party providers.
@@ -818,7 +818,7 @@ BASE_FEATURE(kAutofillThirdPartyModeContentProvider,
 // Android Autofill.
 BASE_FEATURE(kAutofillVirtualViewStructureAndroid,
              "AutofillVirtualViewStructureAndroid",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #endif  // BUILDFLAG(IS_ANDROID)
 
@@ -838,7 +838,7 @@ namespace test {
 // It is helpful in conjunction with `tools/captured_sites/metrics-scraper.py`.
 BASE_FEATURE(kAutofillCapturedSiteTestsMetricsScraper,
              "AutofillCapturedSiteTestsMetricsScraper",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Name of the directory to write the results into.
 const base::FeatureParam<std::string>
     kAutofillCapturedSiteTestsMetricsScraperOutputDir{
@@ -854,32 +854,32 @@ const base::FeatureParam<std::string>
 // to be launched.
 BASE_FEATURE(kAutofillCapturedSiteTestsUseAutofillFlow,
              "AutofillCapturedSiteTestsUseAutofillFlow",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Autofill will not apply updates to address profiles based on data
 // extracted from submitted forms. This feature is mostly for debugging and
 // testing purposes and is not supposed to be launched.
 BASE_FEATURE(kAutofillDisableProfileUpdates,
              "AutofillDisableProfileUpdates",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Autofill will not apply silent updates to the structure of
 // addresses and names. This feature is mostly for debugging and testing
 // purposes and is not supposed to be launched.
 BASE_FEATURE(kAutofillDisableSilentProfileUpdates,
              "AutofillDisableSilentProfileUpdates",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for disabling suppressing suggestions based on the strike
 // database.
 BASE_FEATURE(kAutofillDisableSuggestionStrikeDatabase,
              "AutofillDisableSuggestionStrikeDatabase",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables logging the content of chrome://autofill-internals to the terminal.
 BASE_FEATURE(kAutofillLogToTerminal,
              "AutofillLogToTerminal",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows passing a set of overrides for Autofill server predictions.
 // Example command line to override server predictions manually:
@@ -896,7 +896,7 @@ BASE_FEATURE(kAutofillLogToTerminal,
 // for more examples and details on how to specify overrides.
 BASE_FEATURE(kAutofillOverridePredictions,
              "AutofillOverridePredictions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The override specification in string form.
 // See `OverrideFormat::kSpec` for details.
@@ -922,7 +922,7 @@ BASE_FEATURE(kAutofillServerCommunication,
 // element in the DOM.
 BASE_FEATURE(kAutofillShowTypePredictions,
              "AutofillShowTypePredictions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // This variation controls whether the verbose version of the feature is used.
 // In this version more information is attached to the respective DOM element,
 // such as aria labels and descriptions and select element options values and
diff --git a/components/autofill/core/common/autofill_payments_features.cc b/components/autofill/core/common/autofill_payments_features.cc
index 4588c49f30996..90ebacbf041e0 100644
--- a/components/autofill/core/common/autofill_payments_features.cc
+++ b/components/autofill/core/common/autofill_payments_features.cc
@@ -32,31 +32,31 @@ BASE_FEATURE(kAutofillEnableAmountExtractionAllowlistDesktop,
 // of the allowlisted merchant websites.
 BASE_FEATURE(kAutofillEnableAmountExtractionDesktop,
              "AutofillEnableAmountExtractionDesktop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables logging of the result of checkout amount extraction on desktop.
 // This flag will allow amount extraction to run on any website when a CC
 // form is clicked. This flag should never be enabled.
 BASE_FEATURE(kAutofillEnableAmountExtractionDesktopLogging,
              "AutofillEnableAmountExtractionDesktopLogging",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, buy now pay later (BNPL) in Autofill will be offered.
 BASE_FEATURE(kAutofillEnableBuyNowPayLater,
              "AutofillEnableBuyNowPayLater",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, buy now pay later (BNPL) data will be synced to Chrome clients.
 BASE_FEATURE(kAutofillEnableBuyNowPayLaterSyncing,
              "AutofillEnableBuyNowPayLaterSyncing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, card benefits offered by American Express will be shown in
 // Payments Autofill UI.
 BASE_FEATURE(kAutofillEnableCardBenefitsForAmericanExpress,
              "AutofillEnableCardBenefitsForAmericanExpress",
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -65,19 +65,19 @@ BASE_FEATURE(kAutofillEnableCardBenefitsForAmericanExpress,
 // UI.
 BASE_FEATURE(kAutofillEnableCardBenefitsForBmo,
              "AutofillEnableCardBenefitsForBmo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, card benefits IPH will be shown in Payments Autofill UI.
 BASE_FEATURE(kAutofillEnableCardBenefitsIph,
              "AutofillEnableCardBenefitsIph",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, Chrome will show metadata along with other card information
 // when the virtual card is presented to users.
 BASE_FEATURE(kAutofillEnableCardBenefitsSync,
              "AutofillEnableCardBenefitsSync",
 #if BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -86,14 +86,14 @@ BASE_FEATURE(kAutofillEnableCardBenefitsSync,
 // from issuer for enrolled cards will be enabled during form fill.
 BASE_FEATURE(kAutofillEnableCardInfoRuntimeRetrieval,
              "AutofillEnableCardInfoRuntimeRetrieval",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, we will store CVC for both local and server credit cards. This
 // will also allow the users to autofill their CVCs on checkout pages.
 BASE_FEATURE(kAutofillEnableCvcStorageAndFilling,
              "AutofillEnableCvcStorageAndFilling",
 #if BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -103,7 +103,7 @@ BASE_FEATURE(kAutofillEnableCvcStorageAndFilling,
 BASE_FEATURE(kAutofillEnableCvcStorageAndFillingEnhancement,
              "AutofillEnableCvcStorageAndFillingEnhancement",
 #if BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -112,7 +112,7 @@ BASE_FEATURE(kAutofillEnableCvcStorageAndFillingEnhancement,
 // enable CVV storage suggestions for standalone CVC fields.
 BASE_FEATURE(kAutofillEnableCvcStorageAndFillingStandaloneFormEnhancement,
              "AutofillEnableCvcStorageAndFillingStandaloneFormEnhancement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, server card retrieval will begin with a risk-based check
 // instead of jumping straight to CVC or biometric auth.
@@ -121,7 +121,7 @@ BASE_FEATURE(kAutofillEnableFpanRiskBasedAuthentication,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // When enabled, the Virtual Card enrollment bottom sheet uses the Java
@@ -139,18 +139,18 @@ BASE_FEATURE(kAutofillEnableVirtualCardJavaPaymentsDataManager,
 // TODO(crbug.com/359934323): Clean up when launched
 BASE_FEATURE(kAutofillEnableLogFormEventsToAllParsedFormTypes,
              "AutofillEnableLogFormEventsToAllParsedFormTypes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, card and IBAN autofill will be shown in new FOP style.
 BASE_FEATURE(kAutofillEnableNewFopDisplayDesktop,
              "AutofillEnableNewFopDisplayDesktop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, offers will be displayed in the Clank keyboard accessory during
 // downstream.
 BASE_FEATURE(kAutofillEnableOffersInClankKeyboardAccessory,
              "AutofillEnableOffersInClankKeyboardAccessory",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // When enabled, the payment settings page will show a card promo and allow for
@@ -163,20 +163,20 @@ BASE_FEATURE(kAutofillEnablePaymentSettingsCardPromoAndScanCard,
 // server instead of locally.
 BASE_FEATURE(kAutofillEnablePaymentSettingsServerCardSave,
              "AutofillEnablePaymentSettingsServerCardSave",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // When enabled, risk data is prefetched during payments autofill flows to
 // reduce user-perceived latency.
 BASE_FEATURE(kAutofillEnablePrefetchingRiskDataForRetrieval,
              "AutofillEnablePrefetchingRiskDataForRetrieval",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the 'Save and Fill' suggestion will be offered in the credit
 // card dropdown menu for users who don't have any cards saved in Autofill.
 BASE_FEATURE(kAutofillEnableSaveAndFill,
              "AutofillEnableSaveAndFill",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // When enabled, Pix bank accounts are synced from Chrome Sync backend and
@@ -191,7 +191,7 @@ BASE_FEATURE(kAutofillEnableSyncingOfPixBankAccounts,
 // the card, and FIDO is not.
 BASE_FEATURE(kAutofillEnableVcn3dsAuthentication,
              "AutofillEnableVcn3dsAuthentication",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, Chrome will display grayed out virtual card suggestions on
 // merchant websites where the merchant has opted-out of virtual cards.
@@ -218,13 +218,13 @@ BASE_FEATURE(kAutofillRemovePaymentsButterDropdown,
 // and cardholder name are present.
 BASE_FEATURE(kAutofillSaveCardBottomSheet,
              "AutofillSaveCardBottomSheet",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // If enabled, we will store autofill server card data in shared storage.
 BASE_FEATURE(kAutofillSharedStorageServerCardData,
              "AutofillSharedStorageServerCardData",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_IOS)
 // When enabled, manual fill view will be shown directly from form focusing
@@ -237,7 +237,7 @@ BASE_FEATURE(kAutofillShowManualFillForVirtualCards,
 // When enabled, adds a timeout on the network request for Unmask requests.
 BASE_FEATURE(kAutofillUnmaskCardRequestTimeout,
              "AutofillUnmaskCardRequestTimeout",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, adds a timeout on the network request for UploadCard requests.
 BASE_FEATURE(kAutofillUploadCardRequestTimeout,
@@ -255,7 +255,7 @@ const base::FeatureParam<int> kAutofillUploadCardRequestTimeoutMilliseconds{
 // as well as enable non-fully-launched countries on a trial basis.
 BASE_FEATURE(kAutofillUpstream,
              "AutofillUpstream",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, adds a timeout on the network request for VcnEnroll requests.
 BASE_FEATURE(kAutofillVcnEnrollRequestTimeout,
@@ -271,7 +271,7 @@ const base::FeatureParam<int> kAutofillVcnEnrollRequestTimeoutMilliseconds{
 // and displayed on the payment methods settings page.
 BASE_FEATURE(kAutofillSyncEwalletAccounts,
              "AutofillSyncEwalletAccounts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 bool ShouldShowImprovedUserConsentForCreditCardSave() {
diff --git a/components/commerce/core/commerce_feature_list.cc b/components/commerce/core/commerce_feature_list.cc
index 1e2099337bacb..5ccd20850448d 100644
--- a/components/commerce/core/commerce_feature_list.cc
+++ b/components/commerce/core/commerce_feature_list.cc
@@ -115,7 +115,7 @@ const re2::RE2& GetCouponPartnerMerchantPattern() {
 
 BASE_FEATURE(kCommerceAllowLocalImages,
              "CommerceAllowLocalImages",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCommerceAllowOnDemandBookmarkUpdates,
              "CommerceAllowOnDemandBookmarkUpdates",
@@ -123,7 +123,7 @@ BASE_FEATURE(kCommerceAllowOnDemandBookmarkUpdates,
 
 BASE_FEATURE(kCommerceMerchantViewer,
              "CommerceMerchantViewer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kCommerceMerchantViewerRegionLaunched,
              "CommerceMerchantViewerRegionLaunched",
@@ -131,16 +131,16 @@ BASE_FEATURE(kCommerceMerchantViewerRegionLaunched,
 #else
 BASE_FEATURE(kCommerceMerchantViewerRegionLaunched,
              "CommerceMerchantViewerRegionLaunched",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 BASE_FEATURE(kCommerceLocalPDPDetection,
              "CommerceLocalPDPDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPriceAnnotations,
              "PriceAnnotations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kPriceAnnotationsRegionLaunched,
@@ -149,12 +149,12 @@ BASE_FEATURE(kPriceAnnotationsRegionLaunched,
 #else
 BASE_FEATURE(kPriceAnnotationsRegionLaunched,
              "PriceAnnotationsRegionLaunched",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 BASE_FEATURE(kPriceInsights,
              "PriceInsights",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) || \
     BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_IOS) || BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kPriceInsightsRegionLaunched,
@@ -163,7 +163,7 @@ BASE_FEATURE(kPriceInsightsRegionLaunched,
 #else
 BASE_FEATURE(kPriceInsightsRegionLaunched,
              "PriceInsightsRegionLaunched",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 const char kPriceInsightsDelayChipParam[] = "price-inishgts-delay-chip";
 const base::FeatureParam<bool> kPriceInsightsDelayChip{
@@ -187,11 +187,11 @@ BASE_FEATURE(kPriceTrackingPromo,
 
 // ShopCard in Magic Stack, including shopping features like price drop,
 // reviews, etc.
-BASE_FEATURE(kShopCard, "ShopCard", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kShopCard, "ShopCard", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kProductSpecifications,
              "ProductSpecifications",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for unsupported fields becoming supported in the event of a
 // browser upgrade.
@@ -216,7 +216,7 @@ BASE_FEATURE(kCompareManagementInterface,
 // Discount on navigation
 BASE_FEATURE(kEnableDiscountInfoApi,
              "EnableDiscountInfoApi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/406555154): Clean up this flag when discount on clank launched.
 const char kDiscountOnShoppyPageParam[] = "discount-on-shoppy-page";
@@ -238,7 +238,7 @@ BASE_FEATURE(kEnableDiscountInfoApiRegionLaunched,
 #else
 BASE_FEATURE(kEnableDiscountInfoApiRegionLaunched,
              "EnableDiscountInfoApiRegionLaunched",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 const char kHistoryClustersBehaviorParam[] = "history-cluster-behavior";
@@ -262,7 +262,7 @@ const base::FeatureParam<int> kNonMerchantWideBehavior{
 #else
 BASE_FEATURE(kDiscountDialogAutoPopupBehaviorSetting,
              "DiscountDialogAutoPopupBehaviorSetting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kHistoryClustersBehavior{
     &commerce::kDiscountDialogAutoPopupBehaviorSetting,
     kHistoryClustersBehaviorParam, 0};
@@ -276,16 +276,16 @@ const base::FeatureParam<int> kNonMerchantWideBehavior{
 
 BASE_FEATURE(kDiscountDialogAutoPopupCounterfactual,
              "DiscountDialogAutoPopupCounterfactual",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDiscountsUiRefactor,
              "DiscountsUiRefactor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<bool> kDeleteAllMerchantsOnClearBrowsingHistory{
     &kCommerceMerchantViewer, "delete_all_merchants_on_clear_history", false};
 
-BASE_FEATURE(kShoppingList, "ShoppingList", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kShoppingList, "ShoppingList", base::FEATURE_ENABLED_BY_DEFAULT);
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || \
     BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_IOS)
 BASE_FEATURE(kShoppingListRegionLaunched,
@@ -294,20 +294,20 @@ BASE_FEATURE(kShoppingListRegionLaunched,
 #else
 BASE_FEATURE(kShoppingListRegionLaunched,
              "ShoppingListRegionLaunched",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kPriceTrackingSubscriptionServiceLocaleKey,
              "PriceTrackingSubscriptionServiceLocaleKey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPriceTrackingSubscriptionServiceProductVersion,
              "PriceTrackingSubscriptionServiceProductVersion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kShoppingPDPMetrics,
              "ShoppingPDPMetrics",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kShoppingPDPMetricsRegionLaunched,
              "ShoppingPDPMetricsRegionLaunched",
@@ -318,7 +318,7 @@ BASE_DECLARE_FEATURE(kSubscriptionsApiRegionLaunched);
 
 BASE_FEATURE(kSubscriptionsApi,
              "SubscriptionsApi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSubscriptionsApiRegionLaunched,
              "SubscriptionsApiRegionLaunched",
@@ -326,7 +326,7 @@ BASE_FEATURE(kSubscriptionsApiRegionLaunched,
 
 BASE_FEATURE(kTrackByDefaultOnMobile,
              "TrackByDefaultOnMobile",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_IOS)
 BASE_FEATURE(kPriceInsightsIos,
@@ -335,12 +335,12 @@ BASE_FEATURE(kPriceInsightsIos,
 
 BASE_FEATURE(kPriceInsightsHighPriceIos,
              "PriceInsightsHighPrice",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kShoppingPageTypes,
              "ShoppingPageTypes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kShoppingPageTypesRegionLaunched,
              "ShoppingPageTypesRegionLaunched",
@@ -350,7 +350,7 @@ BASE_FEATURE(kRetailCoupons, "RetailCoupons", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCommerceDeveloper,
              "CommerceDeveloper",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kRetailCouponsWithCodeParam[] = "RetailCouponsWithCodeParam";
 
diff --git a/components/compose/core/browser/compose_features.cc b/components/compose/core/browser/compose_features.cc
index a3c189f5bf0c6..641ce6d566dc7 100644
--- a/components/compose/core/browser/compose_features.cc
+++ b/components/compose/core/browser/compose_features.cc
@@ -14,7 +14,7 @@ BASE_FEATURE(kEnableCompose, "Compose", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeInputParams,
              "ComposeInputParams",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeInnerText,
              "ComposeInnerText",
@@ -22,11 +22,11 @@ BASE_FEATURE(kComposeInnerText,
 
 BASE_FEATURE(kComposeAXSnapshot,
              "ComposeAXSnapshot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeAutoSubmit,
              "ComposeAutoSubmit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeEligible,
              "ComposeEligible",
@@ -50,7 +50,7 @@ BASE_FEATURE(kEnableComposeNudgeAtCursor,
 
 BASE_FEATURE(kEnableComposeSelectionNudge,
              "EnableComposeSelectionNudge",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableComposeLanguageBypassForContextMenu,
              "ComposeLanguageBypassForContextMenu",
@@ -58,19 +58,19 @@ BASE_FEATURE(kEnableComposeLanguageBypassForContextMenu,
 
 BASE_FEATURE(kEnableComposeWebUIAnimations,
              "ComposeWebUIAnimations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableComposeOnDeviceDogfoodFooter,
              "EnableComposeOnDeviceDogfoodFooter",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeUiParams,
              "ComposeUiParams",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeTextOutputAnimation,
              "ComposeTextOutputAnimation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeRequestLatencyTimeout,
              "ComposeRequestLatencyTimeout",
@@ -78,7 +78,7 @@ BASE_FEATURE(kComposeRequestLatencyTimeout,
 
 BASE_FEATURE(kEnableNudgeForUnspecifiedHint,
              "ComposeEnableNudgeForUnspecifiedHint",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableAdditionalTextMetrics,
              "EnableAdditionalTextMetrics",
@@ -86,19 +86,19 @@ BASE_FEATURE(kEnableAdditionalTextMetrics,
 
 BASE_FEATURE(kHappinessTrackingSurveysForComposeAcceptance,
              "HappinessTrackingSurveysForComposeAcceptance",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHappinessTrackingSurveysForComposeClose,
              "HappinessTrackingSurveysForComposeClose",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHappinessTrackingSurveysForComposeNudgeClose,
              "HappinessTrackingSurveysForComposeNudgeClose",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeAllowOnDeviceExecution,
              "ComposeAllowOnDeviceExecution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kComposeUpfrontInputModes,
              "ComposeUpfrontInputModes",
diff --git a/components/content_settings/core/common/features.cc b/components/content_settings/core/common/features.cc
index 3cfa770ae49b7..3e76366b98edd 100644
--- a/components/content_settings/core/common/features.cc
+++ b/components/content_settings/core/common/features.cc
@@ -13,7 +13,7 @@ namespace content_settings {
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kDarkenWebsitesCheckboxInThemesSetting,
              "DarkenWebsitesCheckboxInThemesSetting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 constexpr base::FeatureParam<bool> kDarkenWebsitesCheckboxOptOut{
     &kDarkenWebsitesCheckboxInThemesSetting, "opt_out", true};
 #endif  // BUILDFLAG(IS_ANDROID)
@@ -24,18 +24,18 @@ namespace features {
 BASE_FEATURE(kSafetyCheckUnusedSitePermissions,
              "SafetyCheckUnusedSitePermissions",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #else   // BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 BASE_FEATURE(kSafetyCheckUnusedSitePermissionsForSupportedChooserPermissions,
              "SafetyCheckUnusedSitePermissionsForSupportedChooserPermissions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kActiveContentSettingExpiry,
              "ActiveContentSettingExpiry",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<base::TimeDelta>
     kSafetyCheckUnusedSitePermissionsRepeatedUpdateInterval{
@@ -90,11 +90,11 @@ BASE_FEATURE(kCrosSystemLevelPermissionBlockedWarnings,
 
 BASE_FEATURE(kTrackingProtection3pcd,
              "TrackingProtection3pcd",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNativeUnpartitionedStoragePermittedWhen3PCOff,
              "NativeUnpartitionedStoragePermittedWhen3PCOff",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kTpcdReadHeuristicsGrantsName[] = "TpcdReadHeuristicsGrants";
 
@@ -161,7 +161,7 @@ const base::FeatureParam<EnableForIframeTypes>
 
 BASE_FEATURE(kContentSettingsPartitioning,
              "ContentSettingsPartitioning",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace features
 }  // namespace content_settings
diff --git a/components/download/public/common/download_features.cc b/components/download/public/common/download_features.cc
index 13d655d2e8c84..a47bd78b273fe 100644
--- a/components/download/public/common/download_features.cc
+++ b/components/download/public/common/download_features.cc
@@ -14,14 +14,14 @@ BASE_FEATURE(kParallelDownloading,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kSmartSuggestionForLargeDownloads,
              "SmartSuggestionForLargeDownloads",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kRefreshExpirationDate,
              "RefreshExpirationDate",
@@ -33,20 +33,20 @@ BASE_FEATURE(kDownloadNotificationServiceUnifiedAPI,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kUseInProgressDownloadManagerForDownloadService,
              "UseInProgressDownloadManagerForDownloadService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAllowDownloadResumptionWithoutStrongValidators,
              "AllowDownloadResumptionWithoutStrongValidators",
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -80,7 +80,7 @@ BASE_FEATURE(kCopyImageFilenameToClipboard,
 
 BASE_FEATURE(kEnableAsyncNotificationManagerForDownload,
              "EnableAsyncNotificationManagerForDownload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 }  // namespace features
 
 }  // namespace download
diff --git a/components/facilitated_payments/core/features/features.cc b/components/facilitated_payments/core/features/features.cc
index 56f5721e18cf2..333cb5824a87d 100644
--- a/components/facilitated_payments/core/features/features.cc
+++ b/components/facilitated_payments/core/features/features.cc
@@ -16,25 +16,25 @@ BASE_FEATURE(kEnablePixPayments,
 // accounts for users using their devices in portrait mode.
 BASE_FEATURE(kEnablePixPaymentsInLandscapeMode,
              "EnablePixPaymentsInLandscapeMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // When enabled, the check for matching the main frame domain with the
 // allowlisted domains will be disabled.
 BASE_FEATURE(kDisableFacilitatedPaymentsMerchantAllowlist,
              "DisableFacilitatedPaymentsMerchantAllowlist",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, Chrome will offer to pay with eWallet accounts if a payment
 // link is detected.
 BASE_FEATURE(kEwalletPayments,
              "EwalletPayments",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_ANDROID)
 
 // When enabled, Pix will be able to send multiple server request at a time.
 BASE_FEATURE(kSupportMultipleServerRequestsForPixPayments,
              "SupportMultipleServerRequestsForPixPayments",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace payments::facilitated
diff --git a/components/feature_engagement/public/feature_constants.cc b/components/feature_engagement/public/feature_constants.cc
index 406604176879b..4c9b3f8e286ba 100644
--- a/components/feature_engagement/public/feature_constants.cc
+++ b/components/feature_engagement/public/feature_constants.cc
@@ -13,10 +13,10 @@
 namespace feature_engagement {
 
 // Features used by the In-Product Help system.
-BASE_FEATURE(kIPHDemoMode, "IPH_DemoMode", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kIPHDemoMode, "IPH_DemoMode", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Features used by various clients to show their In-Product Help messages.
-BASE_FEATURE(kIPHDummyFeature, "IPH_Dummy", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kIPHDummyFeature, "IPH_Dummy", base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) || \
     BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
@@ -36,22 +36,22 @@ BASE_FEATURE(kIPHCompanionSidePanelRegionSearchFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHComposeMSBBSettingsFeature,
              "IPH_ComposeMSBBSettingsFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHComposeNewBadgeFeature,
              "IPH_ComposeNewBadgeFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopSharedHighlightingFeature,
              "IPH_DesktopSharedHighlighting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopCustomizeChromeFeature,
              "IPH_DesktopCustomizeChrome",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopCustomizeChromeRefreshFeature,
              "IPH_DesktopCustomizeChromeRefresh",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopNewTabPageModulesCustomizeFeature,
              "IPH_DesktopNewTabPageModulesCustomize",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDiscardRingFeature,
              "IPH_DiscardRing",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -60,7 +60,7 @@ BASE_FEATURE(kIPHDownloadEsbPromoFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHExperimentalAIPromoFeature,
              "IPH_ExperimentalAIPromo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHExplicitBrowserSigninPreferenceRememberedFeature,
              "IPH_ExplicitBrowserSigninPreferenceRemembered",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -70,17 +70,17 @@ BASE_FEATURE(kIPHHistorySearchFeature,
 #if BUILDFLAG(ENABLE_EXTENSIONS)
 BASE_FEATURE(kIPHExtensionsMenuFeature,
              "IPH_ExtensionsMenu",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHExtensionsRequestAccessButtonFeature,
              "IPH_ExtensionsRequestAccessButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 BASE_FEATURE(kIPHFocusHelpBubbleScreenReaderPromoFeature,
              "IPH_FocusHelpBubbleScreenReaderPromo",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHGlicPromoFeature,
              "IPH_GlicPromo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHGMCCastStartStopFeature,
              "IPH_GMCCastStartStop",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -95,10 +95,10 @@ BASE_FEATURE(kIPHLiveCaptionFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHMerchantTrustFeature,
              "IPH_MerchantTrust",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHLensOverlayFeature,
              "IPH_LensOverlay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string> kIPHLensOverlayUrlAllowFilters{
     &feature_engagement::kIPHLensOverlayFeature, "x_url_allow_filters", "[]"};
 const base::FeatureParam<std::string> kIPHLensOverlayUrlBlockFilters{
@@ -114,10 +114,10 @@ const base::FeatureParam<base::TimeDelta> kIPHLensOverlayDelayTime{
     base::Seconds(7)};
 BASE_FEATURE(kIPHLensOverlayTranslateButtonFeature,
              "IPH_LensOverlayTranslateButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabAudioMutingFeature,
              "IPH_TabAudioMuting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPasswordsManagementBubbleAfterSaveFeature,
              "IPH_PasswordsManagementBubbleAfterSave",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -129,7 +129,7 @@ BASE_FEATURE(kIPHPasswordsWebAppProfileSwitchFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPasswordManagerShortcutFeature,
              "IPH_PasswordManagerShortcut",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPasswordSharingFeature,
              "IPH_PasswordSharingFeature",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -141,10 +141,10 @@ BASE_FEATURE(kIPHPerformanceInterventionDialogFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPlusAddressFirstSaveFeature,
              "IPH_PlusAddressFirstSaveFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPowerBookmarksSidePanelFeature,
              "IPH_PowerBookmarksSidePanel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPriceInsightsPageActionIconLabelFeature,
              "IPH_PriceInsightsPageActionIconLabelFeature",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -156,13 +156,13 @@ BASE_FEATURE(kIPHPriceTrackingPageActionIconLabelFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadingListDiscoveryFeature,
              "IPH_ReadingListDiscovery",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadingListEntryPointFeature,
              "IPH_ReadingListEntryPoint",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadingListInSidePanelFeature,
              "IPH_ReadingListInSidePanel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadingModeSidePanelFeature,
              "IPH_ReadingModeSidePanel",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -180,10 +180,10 @@ BASE_FEATURE(kIPHSidePanelLensOverlayPinnableFollowupFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSideSearchAutoTriggeringFeature,
              "IPH_SideSearchAutoTriggering",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSideSearchPageActionLabelFeature,
              "IPH_SideSearchPageActionLabel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSignoutWebInterceptFeature,
              "IPH_SignoutWebIntercept",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -198,71 +198,71 @@ BASE_FEATURE(kIPHTabGroupsSaveV2CloseGroupFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupsSharedTabChangedFeature,
              "IPH_TabGroupsSharedTabChanged",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupsSharedTabFeedbackFeature,
              "IPH_TabGroupsSharedTabFeedback",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabOrganizationSuccessFeature,
              "IPH_TabOrganizationSuccess",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabSearchFeature,
              "IPH_TabSearch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabSearchToolbarButtonFeature,
              "IPH_TabSearchToolbarButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHWebUITabStripFeature,
              "IPH_WebUITabStrip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopSnoozeFeature,
              "IPH_DesktopSnoozeFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDesktopPwaInstallFeature,
              "IPH_DesktopPwaInstall",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHProfileSwitchFeature,
              "IPH_ProfileSwitch",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHWebUiHelpBubbleTestFeature,
              "IPH_WebUiHelpBubbleTest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPriceTrackingInSidePanelFeature,
              "IPH_PriceTrackingInSidePanel",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHBackNavigationMenuFeature,
              "IPH_BackNavigationMenu",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_LINUX) ||
         // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
 
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kIPHAccountSettingsHistorySync,
              "IPH_AccountSettingsHistorySync",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAndroidTabDeclutter,
              "IPH_AndroidTabDeclutter",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationNewTabFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_NewTab",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationOpenInBrowserFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_OpenInBrowser",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationShareFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_Share",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationVoiceSearchFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_VoiceSearch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationTranslateFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_Translate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationAddToBookmarksFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_AddToBookmarks",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAdaptiveButtonInTopToolbarCustomizationReadAloudFeature,
              "IPH_AdaptiveButtonInTopToolbarCustomization_ReadAloud",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAppSpecificHistory,
              "IPH_AppSpecificHistory",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -292,7 +292,7 @@ BASE_FEATURE(kIPHDataSaverDetailFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDataSaverMilestonePromoFeature,
              "IPH_DataSaverMilestonePromo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDataSaverPreviewFeature,
              "IPH_DataSaverPreview",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -310,31 +310,31 @@ BASE_FEATURE(kIPHDownloadHomeFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadIndicatorFeature,
              "IPH_DownloadIndicator",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadPageFeature,
              "IPH_DownloadPage",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadPageScreenshotFeature,
              "IPH_DownloadPageScreenshot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHChromeHomeExpandFeature,
              "IPH_ChromeHomeExpand",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHChromeHomePullToRefreshFeature,
              "IPH_ChromeHomePullToRefresh",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadSettingsFeature,
              "IPH_DownloadSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadInfoBarDownloadContinuingFeature,
              "IPH_DownloadInfoBarDownloadContinuing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDownloadInfoBarDownloadsAreFasterFeature,
              "IPH_DownloadInfoBarDownloadsAreFaster",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadAloudAppMenuFeature,
              "IPH_ReadAloudAppMenuFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadAloudExpandedPlayerFeature,
              "IPH_ReadAloudExpandedPlayerFeature",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -361,52 +361,52 @@ BASE_FEATURE(kIPHRequestDesktopSiteWindowSettingFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHRtlGestureNavigationFeature,
              "IPH_RtlGestureNavigation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHShoppingListSaveFlowFeature,
              "IPH_ShoppingListSaveFlow",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHEphemeralTabFeature,
              "IPH_EphemeralTab",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHFeedCardMenuFeature,
              "IPH_FeedCardMenu",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHGenericAlwaysTriggerHelpUiFeature,
              "IPH_GenericAlwaysTriggerHelpUiFeature",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHIdentityDiscFeature,
              "IPH_IdentityDisc",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHInstanceSwitcherFeature,
              "IPH_InstanceSwitcher",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHKeyboardAccessoryAddressFillingFeature,
              "IPH_KeyboardAccessoryAddressFilling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHKeyboardAccessoryBarSwipingFeature,
              "IPH_KeyboardAccessoryBarSwiping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHKeyboardAccessoryPasswordFillingFeature,
              "IPH_KeyboardAccessoryPasswordFilling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHKeyboardAccessoryPaymentFillingFeature,
              "IPH_KeyboardAccessoryPaymentFilling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHKeyboardAccessoryPaymentOfferFeature,
              "IPH_KeyboardAccessoryPaymentOffer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHLowUserEngagementDetectorFeature,
              "IPH_LowUserEngagementDetector",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHMicToolbarFeature,
              "IPH_MicToolbar",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPageInfoFeature,
              "IPH_PageInfo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPageInfoStoreInfoFeature,
              "IPH_PageInfoStoreInfo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPageZoomFeature,
              "IPH_PageZoom",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -421,13 +421,13 @@ BASE_FEATURE(kIPHTabGroupCreationDialogSyncTextFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupsDragAndDropFeature,
              "IPH_TabGroupsDragAndDrop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupShareNoticeFeature,
              "IPH_TabGroupShareNotice",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupShareNotificationBubbleOnStripFeature,
              "IPH_TabGroupSharedNotificationBubbleOnStrip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabGroupsRemoteGroupFeature,
              "IPH_TabGroupsRemoteGroup",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -445,7 +445,7 @@ BASE_FEATURE(kIPHTabSwitcherButtonFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTabSwitcherButtonSwitchIncognitoFeature,
              "IPH_TabSwitcherButtonSwitchIncognito",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHTranslateMenuButtonFeature,
              "IPH_TranslateMenuButton",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -469,7 +469,7 @@ BASE_FEATURE(kIPHVideoTutorialTryNowFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHExploreSitesTileFeature,
              "IPH_ExploreSitesTile",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHFeedHeaderMenuFeature,
              "IPH_FeedHeaderMenu",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -481,19 +481,19 @@ BASE_FEATURE(kIPHFeedSwipeRefresh,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHChromeReengagementNotification1Feature,
              "IPH_ChromeReengagementNotification1",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHChromeReengagementNotification2Feature,
              "IPH_ChromeReengagementNotification2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHChromeReengagementNotification3Feature,
              "IPH_ChromeReengagementNotification3",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHShareScreenshotFeature,
              "IPH_ShareScreenshot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSharingHubLinkToggleFeature,
              "IPH_SharingHubLinkToggle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHWebFeedFollowFeature,
              "IPH_WebFeedFollow",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -505,10 +505,10 @@ BASE_FEATURE(kIPHWebFeedPostFollowDialogFeatureWithUIUpdate,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSharedHighlightingBuilder,
              "IPH_SharedHighlightingBuilder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSharedHighlightingReceiverFeature,
              "IPH_SharedHighlightingReceiver",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHSharingHubWebnotesStylizeFeature,
              "IPH_SharingHubWebnotesStylize",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -520,16 +520,16 @@ BASE_FEATURE(kIPHRestoreTabsOnFREFeature,
 #if BUILDFLAG(IS_IOS) || BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kIPHBottomToolbarTipFeature,
              "IPH_BottomToolbarTip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_IOS) || BUILDFLAG(IS_ANDROID)
 
 #if BUILDFLAG(IS_IOS)
 BASE_FEATURE(kIPHLongPressToolbarTipFeature,
              "IPH_LongPressToolbarTip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHBadgedReadingListFeature,
              "IPH_BadgedReadingList",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHWhatsNewFeature,
              "IPH_WhatsNew",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -538,10 +538,10 @@ BASE_FEATURE(kIPHWhatsNewUpdatedFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHReadingListMessagesFeature,
              "IPH_ReadingListMessages",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHBadgedTranslateManualTriggerFeature,
              "IPH_BadgedTranslateManualTrigger",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHDiscoverFeedHeaderFeature,
              "IPH_DiscoverFeedHeaderMenu",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -550,7 +550,7 @@ BASE_FEATURE(kIPHDefaultSiteViewFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHFollowWhileBrowsingFeature,
              "IPH_FollowWhileBrowsing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPriceNotificationsWhileBrowsingFeature,
              "IPH_PriceNotificationsWhileBrowsing",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -583,7 +583,7 @@ BASE_FEATURE(kIPHiOSPromoCredentialProviderExtensionFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSPromoDefaultBrowserReminderFeature,
              "IPH_iOSPromoDefaultBrowserReminder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSHistoryOnOverflowMenuFeature,
              "IPH_iOSHistoryOnOverflowMenuFeature",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -607,16 +607,16 @@ BASE_FEATURE(kIPHiOSPullToRefreshFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSReplaceSyncPromosWithSignInPromos,
              "IPH_iOSReplaceSyncPromosWithSignInPromos",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSTabGridSwipeRightForIncognito,
              "IPH_iOSTabGridSwipeRightForIncognito",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSDockingPromoFeature,
              "IPH_iOSDockingPromo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSDockingPromoRemindMeLaterFeature,
              "IPH_iOSDockingPromoRemindMeLater",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSPromoAllTabsFeature,
              "IPH_iOSPromoAllTabs",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -661,7 +661,7 @@ BASE_FEATURE(kIPHHomeCustomizationMenuFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSLensOverlayEntrypointTipFeature,
              "IPH_iOSLensOverlayEntrypointTip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHiOSLensOverlayEscapeHatchTipFeature,
              "IPH_iOSLensOverlayEscapeHatchTip",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -703,7 +703,7 @@ constexpr base::FeatureParam<int> kDefaultBrowserEligibilitySlidingWindowParam{
 
 BASE_FEATURE(kDefaultBrowserTriggerCriteriaExperiment,
              "DefaultBrowserTriggerCriteriaExperiment",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #endif  // BUILDFLAG(IS_IOS)
 
@@ -711,22 +711,22 @@ BASE_FEATURE(kDefaultBrowserTriggerCriteriaExperiment,
     BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FUCHSIA)
 BASE_FEATURE(kIPHAutofillBnplAffirmOrZipSuggestionFeature,
              "IPH_AutofillBnplAffirmOrZipSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillCardInfoRetrievalSuggestionFeature,
              "IPH_AutofillCardInfoRetrievalSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillCreditCardBenefitFeature,
              "IPH_AutofillCreditCardBenefit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillDisabledVirtualCardSuggestionFeature,
              "IPH_AutofillDisabledVirtualCardSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillExternalAccountProfileSuggestionFeature,
              "IPH_AutofillExternalAccountProfileSuggestion",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillHomeWorkProfileSuggestionFeature,
              "IPH_AutofillHomeWorkProfileSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHAutofillAiOptInFeature,
              "IPH_AutofillAiOptIn",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -741,7 +741,7 @@ BASE_FEATURE(kIPHCookieControlsFeature,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHPlusAddressCreateSuggestionFeature,
              "IPH_PlusAddressCreateSuggestion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_APPLE) ||
         // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) ||
         // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FUCHSIA)
@@ -752,106 +752,106 @@ BASE_FEATURE(kIPHGrowthFramework,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHGoogleOneOfferNotificationFeature,
              "IPH_GoogleOneOfferNotification",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHLauncherSearchHelpUiFeature,
              "IPH_LauncherSearchHelpUi",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedOneFeature,
              "IPH_ScalableIphTimerBasedOne",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedTwoFeature,
              "IPH_ScalableIphTimerBasedTwo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedThreeFeature,
              "IPH_ScalableIphTimerBasedThree",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedFourFeature,
              "IPH_ScalableIphTimerBasedFour",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedFiveFeature,
              "IPH_ScalableIphTimerBasedFive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedSixFeature,
              "IPH_ScalableIphTimerBasedSix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedSevenFeature,
              "IPH_ScalableIphTimerBasedSeven",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedEightFeature,
              "IPH_ScalableIphTimerBasedEight",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedNineFeature,
              "IPH_ScalableIphTimerBasedNine",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphTimerBasedTenFeature,
              "IPH_ScalableIphTimerBasedTen",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedOneFeature,
              "IPH_ScalableIphUnlockedBasedOne",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedTwoFeature,
              "IPH_ScalableIphUnlockedBasedTwo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedThreeFeature,
              "IPH_ScalableIphUnlockedBasedThree",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedFourFeature,
              "IPH_ScalableIphUnlockedBasedFour",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedFiveFeature,
              "IPH_ScalableIphUnlockedBasedFive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedSixFeature,
              "IPH_ScalableIphUnlockedBasedSix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedSevenFeature,
              "IPH_ScalableIphUnlockedBasedSeven",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedEightFeature,
              "IPH_ScalableIphUnlockedBasedEight",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedNineFeature,
              "IPH_ScalableIphUnlockedBasedNine",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphUnlockedBasedTenFeature,
              "IPH_ScalableIphUnlockedBasedTen",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedNudgeFeature,
              "IPH_ScalableIphHelpAppBasedNudge",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedOneFeature,
              "IPH_ScalableIphHelpAppBasedOne",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedTwoFeature,
              "IPH_ScalableIphHelpAppBasedTwo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedThreeFeature,
              "IPH_ScalableIphHelpAppBasedThree",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedFourFeature,
              "IPH_ScalableIphHelpAppBasedFour",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedFiveFeature,
              "IPH_ScalableIphHelpAppBasedFive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedSixFeature,
              "IPH_ScalableIphHelpAppBasedSix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedSevenFeature,
              "IPH_ScalableIphHelpAppBasedSeven",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedEightFeature,
              "IPH_ScalableIphHelpAppBasedEight",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedNineFeature,
              "IPH_ScalableIphHelpAppBasedNine",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphHelpAppBasedTenFeature,
              "IPH_ScalableIphHelpAppBasedTen",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kIPHScalableIphGamingFeature,
              "IPH_ScalableIphGaming",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
diff --git a/components/feed/feed_feature_list.cc b/components/feed/feed_feature_list.cc
index 554a4d8c78352..7f944eabbb730 100644
--- a/components/feed/feed_feature_list.cc
+++ b/components/feed/feed_feature_list.cc
@@ -29,14 +29,14 @@ BASE_FEATURE(kDiscoFeedEndpoint,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kXsurfaceMetricsReporting,
              "XsurfaceMetricsReporting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kFeedLoadingPlaceholder,
              "FeedLoadingPlaceholder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kFeedImageMemoryCacheSizePercentage,
              "FeedImageMemoryCacheSizePercentage",
-             base::FEATURE_DISABLED_BY_DEFAULT);
-BASE_FEATURE(kFeedStamp, "FeedStamp", base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
+BASE_FEATURE(kFeedStamp, "FeedStamp", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kWebFeedAwareness,
              "WebFeedAwareness",
@@ -46,7 +46,7 @@ BASE_FEATURE(kWebFeedOnboarding,
              "WebFeedOnboarding",
              base::FEATURE_ENABLED_BY_DEFAULT);
 
-BASE_FEATURE(kWebFeedSort, "WebFeedSort", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kWebFeedSort, "WebFeedSort", base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsCormorantEnabledForLocale(std::string country) {
   return IsWebFeedEnabledForLocale(country);
@@ -54,7 +54,7 @@ bool IsCormorantEnabledForLocale(std::string country) {
 
 BASE_FEATURE(kPersonalizeFeedUnsignedUsers,
              "PersonalizeFeedUnsignedUsers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/40764861): Remove this helper, directly use kSignin instead.
 signin::ConsentLevel GetConsentLevelNeededForPersonalizedFeed() {
@@ -71,15 +71,15 @@ BASE_FEATURE(kFeedShowSignInCommand,
 
 BASE_FEATURE(kFeedPerformanceStudy,
              "FeedPerformanceStudy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSyntheticCapabilities,
              "FeedSyntheticCapabilities",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFeedSignedOutViewDemotion,
              "FeedSignedOutViewDemotion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFeedDynamicColors,
              "FeedDynamicColors",
@@ -87,11 +87,11 @@ BASE_FEATURE(kFeedDynamicColors,
 
 BASE_FEATURE(kFeedFollowUiUpdate,
              "FeedFollowUiUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kRefreshFeedOnRestart,
              "RefreshFeedOnRestart",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFeedContainment,
              "FeedContainment",
@@ -99,15 +99,15 @@ BASE_FEATURE(kFeedContainment,
 
 BASE_FEATURE(kWebFeedKillSwitch,
              "WebFeedKillSwitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFeedRecyclerBinderUnmountOnDetach,
              "FeedRecyclerBinderUnmountOnDetach",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFeedStreaming,
              "FeedStreaming",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsWebFeedEnabledForLocale(const std::string& country) {
   const std::vector<std::string> launched_countries = {"AU", "CA", "GB",
diff --git a/components/history_embeddings/history_embeddings_features.cc b/components/history_embeddings/history_embeddings_features.cc
index f728803220b62..6e8b423324d06 100644
--- a/components/history_embeddings/history_embeddings_features.cc
+++ b/components/history_embeddings/history_embeddings_features.cc
@@ -25,7 +25,7 @@ FeatureParameters& GetFeatureParametersMutable() {
 // disabled by default for other regions.
 BASE_FEATURE(kHistoryEmbeddings,
              "HistoryEmbeddings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature specifies whether to answer queries using an answerer; it can be
 // considered a toggle for v2 answering functionality. Parameters are all kept
@@ -36,7 +36,7 @@ BASE_FEATURE(kHistoryEmbeddings,
 // feature to avoid confusion about which feature owns which parameters.
 BASE_FEATURE(kHistoryEmbeddingsAnswers,
              "HistoryEmbeddingsAnswers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 ////////////////////////////////////////////////////////////////////////////////
 
diff --git a/components/omnibox/common/omnibox_feature_configs.cc b/components/omnibox/common/omnibox_feature_configs.cc
index 26d27fa8b1ca1..6d25159e2c929 100644
--- a/components/omnibox/common/omnibox_feature_configs.cc
+++ b/components/omnibox/common/omnibox_feature_configs.cc
@@ -15,7 +15,7 @@ namespace omnibox_feature_configs {
 
 constexpr auto enabled_by_default_desktop_only =
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
-    base::FEATURE_DISABLED_BY_DEFAULT;
+    base::FEATURE_ENABLED_BY_DEFAULT;
 #else
     base::FEATURE_ENABLED_BY_DEFAULT;
 #endif
@@ -61,7 +61,7 @@ DocumentProvider::DocumentProvider() {
 // static
 BASE_FEATURE(ForceAllowedToBeDefault::kForceAllowedToBeDefault,
              "OmniboxForceAllowedToBeDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 ForceAllowedToBeDefault::ForceAllowedToBeDefault() {
   enabled = base::FeatureList::IsEnabled(kForceAllowedToBeDefault);
 }
@@ -251,7 +251,7 @@ SuggestionAnswerMigration::SuggestionAnswerMigration() {
 
 BASE_FEATURE(OmniboxUrlSuggestionsOnFocus::kOmniboxUrlSuggestionsOnFocus,
              "OmniboxUrlSuggestionsOnFocus",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 OmniboxUrlSuggestionsOnFocus::OmniboxUrlSuggestionsOnFocus() {
   const char kMvtScoringParamRecencyFactor_Default[] = "default";
   enabled = base::FeatureList::IsEnabled(kOmniboxUrlSuggestionsOnFocus);
@@ -309,7 +309,7 @@ bool OmniboxUrlSuggestionsOnFocus::MostVisitedPrefetchingEnabled() const {
 BASE_FEATURE(HappinessTrackingSurveyForOmniboxOnFocusZps::
                  kHappinessTrackingSurveyForOmniboxOnFocusZps,
              "HappinessTrackingSurveyForOmniboxOnFocusZps",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 HappinessTrackingSurveyForOmniboxOnFocusZps::
     HappinessTrackingSurveyForOmniboxOnFocusZps() {
   enabled = base::FeatureList::IsEnabled(
diff --git a/components/omnibox/common/omnibox_features.cc b/components/omnibox/common/omnibox_features.cc
index 1f6cc068b9fe7..691d191bc8b34 100644
--- a/components/omnibox/common/omnibox_features.cc
+++ b/components/omnibox/common/omnibox_features.cc
@@ -19,7 +19,7 @@ namespace {
 constexpr bool IS_ANDROID = !!BUILDFLAG(IS_ANDROID);
 constexpr bool IS_IOS = !!BUILDFLAG(IS_IOS);
 
-constexpr base::FeatureState DISABLED = base::FEATURE_DISABLED_BY_DEFAULT;
+constexpr base::FeatureState DISABLED = base::FEATURE_ENABLED_BY_DEFAULT;
 constexpr base::FeatureState ENABLED = base::FEATURE_ENABLED_BY_DEFAULT;
 
 constexpr base::FeatureState enable_if(bool condition) {
diff --git a/components/optimization_guide/core/model_execution/model_execution_features.cc b/components/optimization_guide/core/model_execution/model_execution_features.cc
index 6bd8a523c7bf8..b670eca04a341 100644
--- a/components/optimization_guide/core/model_execution/model_execution_features.cc
+++ b/components/optimization_guide/core/model_execution/model_execution_features.cc
@@ -19,19 +19,19 @@ namespace optimization_guide::features::internal {
 // Settings visibility features.
 BASE_FEATURE(kComposeSettingsVisibility,
              "ComposeSettingsVisibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kTabOrganizationSettingsVisibility,
              "TabOrganizationSettingsVisibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kWallpaperSearchSettingsVisibility,
              "WallpaperSearchSettingsVisibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kHistorySearchSettingsVisibility,
              "HistorySearchSettingsVisibility",
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kPasswordChangeSubmission,
              "PasswordChangeSubmissionSettingsVisibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<std::string> kPerformanceClassListForHistorySearch(
     &kHistorySearchSettingsVisibility,
@@ -54,15 +54,15 @@ BASE_FEATURE(kWallpaperSearchGraduated,
 
 BASE_FEATURE(kExperimentalAIIPHPromoRampUp,
              "ExperimentalAIIPHPromoRampUp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kModelExecutionCapabilityDisable,
              "ModelExecutionCapabilityDisable",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOnDeviceModelTestFeature,
              "OnDeviceModelTestFeature",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsGraduatedFeature(UserVisibleFeatureKey feature) {
   bool is_graduated = false;
diff --git a/components/optimization_guide/core/optimization_guide_features.cc b/components/optimization_guide/core/optimization_guide_features.cc
index 6de01c7f15aaf..7a376f8e2fd45 100644
--- a/components/optimization_guide/core/optimization_guide_features.cc
+++ b/components/optimization_guide/core/optimization_guide_features.cc
@@ -41,7 +41,7 @@ constexpr auto enabled_by_default_mobile_only =
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
     base::FEATURE_ENABLED_BY_DEFAULT;
 #else
-    base::FEATURE_DISABLED_BY_DEFAULT;
+    base::FEATURE_ENABLED_BY_DEFAULT;
 #endif
 
 }  // namespace
@@ -72,7 +72,7 @@ BASE_FEATURE(kOptimizationGuideModelDownloading,
 #if BUILDFLAG(BUILD_WITH_TFLITE_LIB)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else   // BUILD_WITH_TFLITE_LIB
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // !BUILD_WITH_TFLITE_LIB
 );
 
@@ -90,7 +90,7 @@ BASE_FEATURE(kPageTextExtraction,
 // Enables the validation of optimization guide metadata.
 BASE_FEATURE(kOptimizationGuideMetadataValidation,
              "OptimizationGuideMetadataValidation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPreventLongRunningPredictionModels,
              "PreventLongRunningPredictionModels",
@@ -98,7 +98,7 @@ BASE_FEATURE(kPreventLongRunningPredictionModels,
 
 BASE_FEATURE(kOverrideNumThreadsForModelExecution,
              "OverrideNumThreadsForModelExecution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOptGuideEnableXNNPACKDelegateWithTFLite,
              "OptGuideEnableXNNPACKDelegateWithTFLite",
@@ -126,7 +126,7 @@ BASE_FEATURE(kOptimizationGuidePersonalizedFetching,
 // immediate remedy is needed to stop serving those versions.
 BASE_FEATURE(kOptimizationGuidePredictionModelKillswitch,
              "OptimizationGuidePredictionModelKillswitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether to enable model execution.
 BASE_FEATURE(kOptimizationGuideModelExecution,
@@ -139,7 +139,7 @@ BASE_FEATURE(kOptimizationGuideOnDeviceModel,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Whether to allow on device model evaluation for Compose. This has no effect
@@ -152,7 +152,7 @@ BASE_FEATURE(kOptimizationGuideComposeOnDeviceEval,
 // metrics.
 BASE_FEATURE(kLogOnDeviceMetricsOnStartup,
              "LogOnDeviceMetricsOnStartup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether to download the text safety classifier model.
 BASE_FEATURE(kTextSafetyClassifier,
@@ -163,7 +163,7 @@ BASE_FEATURE(kTextSafetyClassifier,
 // safety classifier.
 BASE_FEATURE(kTextSafetyScanLanguageDetection,
              "TextSafetyScanLanguageDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether the on-device model validation checks are enabled.
 BASE_FEATURE(kOnDeviceModelValidation,
@@ -174,7 +174,7 @@ BASE_FEATURE(kOnDeviceModelValidation,
 // version update.
 BASE_FEATURE(kOnDeviceModelFetchPerformanceClassEveryStartup,
              "OnDeviceModelFetchPerformanceClassEveryStartup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable the "Synapse" refreshed AI settings page.
 BASE_FEATURE(kAiSettingsPageRefresh,
@@ -187,11 +187,11 @@ const base::FeatureParam<bool> kShowAiSettingsForTesting{
 // Enable AI settings page integration with Privacy Guide.
 BASE_FEATURE(kPrivacyGuideAiSettings,
              "PrivacyGuideAiSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAiSettingsPageEnterpriseDisabledUi,
              "AiSettingsPageEnterpriseDisabledUi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOnDeviceModelPerformanceParams,
              "OnDeviceModelPerformanceParams",
@@ -199,7 +199,7 @@ BASE_FEATURE(kOnDeviceModelPerformanceParams,
 
 BASE_FEATURE(kAnnotatedPageContentWithActionableElements,
              "AnnotatedPageContentWithActionableElements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<std::string> kPerformanceClassListForOnDeviceModel{
     &kOnDeviceModelPerformanceParams,
@@ -212,7 +212,7 @@ const base::FeatureParam<std::string>
 
 BASE_FEATURE(kOptimizationGuideIconView,
              "OptimizationGuideIconView",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The default value here is a bit of a guess.
 // TODO(crbug.com/40163041): This should be tuned once metrics are available.
diff --git a/components/performance_manager/features.cc b/components/performance_manager/features.cc
index f593286e0c71a..1b61519e5a1dd 100644
--- a/components/performance_manager/features.cc
+++ b/components/performance_manager/features.cc
@@ -17,7 +17,7 @@ namespace performance_manager::features {
 #if !BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kBackgroundTabLoadingFromPerformanceManager,
              "BackgroundTabLoadingFromPerformanceManager",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(size_t,
                    kBackgroundTabLoadingMinSiteEngagement,
@@ -33,25 +33,25 @@ BASE_FEATURE_PARAM(bool,
 
 BASE_FEATURE(kPerformanceControlsPerformanceSurvey,
              "PerformanceControlsPerformanceSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPerformanceControlsBatteryPerformanceSurvey,
              "PerformanceControlsBatteryPerformanceSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The variable was renamed to "MemorySaver" but the experiment name remains as
 // "HighEfficiency" because it is already running (crbug.com/1493843).
 BASE_FEATURE(kPerformanceControlsMemorySaverOptOutSurvey,
              "PerformanceControlsHighEfficiencyOptOutSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPerformanceControlsBatterySaverOptOutSurvey,
              "PerformanceControlsBatterySaverOptOutSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPerformanceControlsPPMSurvey,
              "PerformanceControlsPPMSurvey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<base::TimeDelta>
     kPerformanceControlsBatterySurveyLookback{
@@ -135,11 +135,11 @@ BASE_FEATURE_PARAM(size_t,
 
 BASE_FEATURE(kPerformanceInterventionDemoMode,
              "PerformanceInterventionDemoMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPerformanceInterventionNotificationImprovements,
              "PerformanceInterventionNotificationImprovements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kMinimumTimeBetweenReshow,
@@ -173,7 +173,7 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 
 BASE_FEATURE(kPerformanceInterventionNotificationStringImprovements,
              "PerformanceInterventionNotificationStringImprovements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(int,
                    kNotificationStringVersion,
@@ -191,7 +191,7 @@ BASE_FEATURE(kUnthrottledTabProcessReporting,
 
 BASE_FEATURE(kPMProcessPriorityPolicy,
              "PMProcessPriorityPolicy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<bool> kInheritParentPriority{
     &kPMProcessPriorityPolicy, "inherit_parent_priority", true};
@@ -205,7 +205,7 @@ const base::FeatureParam<bool> kNonSpareRendererHighInitialPriority{
 
 BASE_FEATURE(kPMLoadingPageVoter,
              "PMLoadingPageVoter",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kBFCachePerformanceManagerPolicy,
              "BFCachePerformanceManagerPolicy",
@@ -255,15 +255,15 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 
 BASE_FEATURE(kFreezingOnBatterySaver,
              "FreezingOnBatterySaver",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFreezingOnBatterySaverForTesting,
              "FreezingOnBatterySaverForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFreezingFollowsDiscardOptOut,
              "FreezingFollowsDiscardOptOut",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kRecordFreezingEligibilityUKM,
              "RecordFreezingEligibilityUKM",
@@ -279,14 +279,14 @@ BASE_FEATURE(kSeamlessRenderFrameSwap,
 
 BASE_FEATURE(kUnimportantFramesPriority,
              "UnimportantFramesPriority",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kThrottleUnimportantFrameRate,
              "ThrottleUnimportantFrameRate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kKeepDefaultSearchEngineRendererAlive,
              "KeepDefaultSearchEngineRendererAlive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace performance_manager::features
diff --git a/components/search/ntp_features.cc b/components/search/ntp_features.cc
index 34f1ec42aeabe..ae506d93c5362 100644
--- a/components/search/ntp_features.cc
+++ b/components/search/ntp_features.cc
@@ -28,13 +28,13 @@ namespace ntp_features {
 // the New Tab page real search box ("realbox").
 BASE_FEATURE(kConfirmSuggestionRemovals,
              "ConfirmNtpSuggestionRemovals",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, shows an extension card within the Customize Chrome Side
 // Panel for access to the Chrome Web Store extensions.
 BASE_FEATURE(kCustomizeChromeSidePanelExtensionsCard,
              "CustomizeChromeSidePanelExtensionsCard",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, shows wallpaper search within the Customize Chrome Side Panel.
 // This is a kill switch. Keep indefinitely.
@@ -46,7 +46,7 @@ BASE_FEATURE(kCustomizeChromeWallpaperSearch,
 // page for Wallpaper Search.";
 BASE_FEATURE(kCustomizeChromeWallpaperSearchButton,
              "CustomizeChromeWallpaperSearchButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, shows inspiration card in Customize Chrome Side Panel Wallpaper
 // Search.
@@ -58,31 +58,31 @@ BASE_FEATURE(kCustomizeChromeWallpaperSearchInspirationCard,
 // matching omnibox theme and increased realbox shadow.
 BASE_FEATURE(kRealboxCr23Theming,
              "NtpRealboxCr23Theming",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the NTP "realbox" will have same border/drop shadow in hover
 // state as searchbox.
 BASE_FEATURE(kRealboxMatchSearchboxTheme,
              "NtpRealboxMatchSearchboxTheme",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the real search box ("realbox") on the New Tab page will show a
 // Google (g) icon instead of the typical magnifying glass (aka loupe).
 BASE_FEATURE(kRealboxUseGoogleGIcon,
              "NtpRealboxUseGoogleGIcon",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, alpha NTP backgrounds will show in Customize Chrome.
 // This is a development switch. Keep indefinitely.
 BASE_FEATURE(kNtpAlphaBackgroundCollections,
              "NtpAlphaBackgroundCollections",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, NTP background image links will be checked for HTTP status
 // errors."
 BASE_FEATURE(kNtpBackgroundImageErrorDetection,
              "NtpBackgroundImageErrorDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, calendar module will be shown.
 BASE_FEATURE(kNtpCalendarModule,
@@ -99,7 +99,7 @@ BASE_FEATURE(kNtpChromeCartModule,
 // This is a development switch. Keep indefinitely.
 BASE_FEATURE(kNtpDummyModules,
              "NtpDummyModules",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // If enabled, Google Drive module will be shown.
@@ -111,13 +111,13 @@ BASE_FEATURE(kNtpDriveModule,
 // If enabled, the NTP Drive module does not require sync.
 BASE_FEATURE(kNtpDriveModuleNoSyncRequirement,
              "NtpDriveModuleNoSyncRequirement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, segmentation data will be collected to decide whether or not to
 // show the Drive module.
 BASE_FEATURE(kNtpDriveModuleSegmentation,
              "NtpDriveModuleSegmentation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, six files show in the NTP Drive module, instead of three.
 BASE_FEATURE(kNtpDriveModuleShowSixFiles,
@@ -144,37 +144,37 @@ BASE_FEATURE(kNtpMiddleSlotPromoDismissal,
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpModulesLoadTimeoutMilliseconds,
              "NtpModulesLoadTimeoutMilliseconds",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set param "NtpModulesOrderParam".
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpModulesOrder,
              "NtpModulesOrder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set param "NtpModulesMaxColumnCountParam".
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpModulesMaxColumnCount,
              "NtpModulesMaxColumnCount",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set param "NtpModulesLoadedWithOtherModulesMaxInstanceCount"
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpModulesLoadedWithOtherModulesMaxInstanceCount,
              "NtpModulesLoadedWithOtherModulesMaxInstanceCount",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, modules will be able to be reordered via dragging and dropping
 BASE_FEATURE(kNtpModulesDragAndDrop,
              "NtpModulesDragAndDrop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, modules will be loaded but not shown. This is useful to determine
 // if a user would have seen modules in order to counterfactually log or
 // trigger.
 BASE_FEATURE(kNtpModulesLoad,
              "NtpModulesLoad",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, OneGoogleBar will be shown.
 // This is a kill switch. Keep indefinitely.
@@ -190,38 +190,38 @@ BASE_FEATURE(kNtpOutlookCalendarModule,
 // If enabled, Google Photos module will be shown.
 BASE_FEATURE(kNtpPhotosModule,
              "NtpPhotosModule",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, a customized title will be shown on the opt-in card.
 BASE_FEATURE(kNtpPhotosModuleCustomizedOptInTitle,
              "NtpPhotosModuleCustomizedOptInTitle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, a customized art work will be shown on the opt-in card.
 BASE_FEATURE(kNtpPhotosModuleCustomizedOptInArtWork,
              "NtpPhotosModuleCustomizedOptInArtWork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Google Photos opt-in card will show a button to soft opt-out.
 BASE_FEATURE(kNtpPhotosModuleSoftOptOut,
              "NtpPhotosModuleSoftOptOut",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the single svg image show in Photos opt-in screen will be
 // replaced by constituent images to support i18n.
 BASE_FEATURE(kNtpPhotosModuleSplitSvgOptInArtWork,
              "NtpPhotosModuleSplitSvgOptInArtWork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Following Feed module will be shown.
 BASE_FEATURE(kNtpFeedModule,
              "NtpFeedModule",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, SafeBrowsing module will be shown to a target user.
 BASE_FEATURE(kNtpSafeBrowsingModule,
              "NtpSafeBrowsingModule",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, sharepoint module will be shown.
 BASE_FEATURE(kNtpSharepointModule,
@@ -235,12 +235,12 @@ BASE_FEATURE(kNtpShortcuts, "NtpShortcuts", base::FEATURE_ENABLED_BY_DEFAULT);
 // If enabled, the Tab Resumption module will be shown.
 BASE_FEATURE(kNtpMostRelevantTabResumptionModule,
              "NtpMostRelevantTabResumptionModule",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the Tab Resumption module with the device icon will be shown.
 BASE_FEATURE(kNtpMostRelevantTabResumptionModuleDeviceIcon,
              "NtpMostRelevantTabResumptionModuleDeviceIcon",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the Tab Resumption module will use the synced fallback icon.
 BASE_FEATURE(kNtpMostRelevantTabResumptionUseIsKnownToSync,
@@ -251,44 +251,44 @@ BASE_FEATURE(kNtpMostRelevantTabResumptionUseIsKnownToSync,
 // favicon if there are none locally available.
 BASE_FEATURE(kNtpMostRelevantTabResumptionModuleFallbackToHost,
              "NtpMostRelevantTabResumptionModuleFallbackToHost",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNtpTabResumptionModuleCategories,
              "NtpTabResumptionModuleCategories",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set how recent tabs must be to be shown.
 BASE_FEATURE(kNtpTabResumptionModuleTimeLimit,
              "NtpTabResumptionModuleTimeLimit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, shows entry point on New Tab Page for Customize Chrome Side Panel
 // Wallpaper Search.
 BASE_FEATURE(kNtpWallpaperSearchButton,
              "NtpWallpaperSearchButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, animates New Tab Page's Wallpaper Search Button.
 BASE_FEATURE(kNtpWallpaperSearchButtonAnimation,
              "NtpWallpaperSearchButtonAnimation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set param "NtpWallpaperSearchButtonHideCondition".
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpWallpaperSearchButtonHideCondition,
              "NtpWallpaperSearchButtonHideCondition",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dummy feature to set param "NtpWallpaperSearchButtonAnimationShownThreshold".
 // This is used for an emergency Finch param. Keep indefinitely.
 BASE_FEATURE(kNtpWallpaperSearchButtonAnimationShownThreshold,
              "NtpWallpaperSearchButtonAnimationShownThreshold",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature to control the display of a mobile promo on the NTP.
 BASE_FEATURE(kNtpMobilePromo,
              "NtpMobilePromo",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the Microsoft Authentication module will be shown.
 BASE_FEATURE(kNtpMicrosoftAuthenticationModule,
@@ -298,10 +298,10 @@ BASE_FEATURE(kNtpMicrosoftAuthenticationModule,
 // If enabled, the OGB loader will request for the async bar parts payload type.
 BASE_FEATURE(kNtpOneGoogleBarAsyncBarParts,
              "NtpOneGoogleBarAsyncBarParts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, a footer will show on the NTP.
-BASE_FEATURE(kNtpFooter, "NtpFooter", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kNtpFooter, "NtpFooter", base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kNtpModuleIgnoredCriteriaThreshold[] =
     "NtpModuleIgnoredCriteriaThreshold";
diff --git a/components/ukm/ukm_recorder_impl.cc b/components/ukm/ukm_recorder_impl.cc
index e5e015cbc4091..0c8ae72c80727 100644
--- a/components/ukm/ukm_recorder_impl.cc
+++ b/components/ukm/ukm_recorder_impl.cc
@@ -48,7 +48,7 @@ namespace ukm {
 
 BASE_FEATURE(kUkmSamplingRateFeature,
              "UkmSamplingRate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 namespace {
 
diff --git a/components/viz/common/features.cc b/components/viz/common/features.cc
index 151cc6938805c..8dc8cba9c0389 100644
--- a/components/viz/common/features.cc
+++ b/components/viz/common/features.cc
@@ -39,14 +39,14 @@ namespace features {
 // involvement. For now, this applies only to top controls.
 BASE_FEATURE(kAndroidBrowserControlsInViz,
              "AndroidBrowserControlsInViz",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If this flag is enabled, AndroidBrowserControlsInViz and
 // BottomControlsRefactor with the "Dispatch yOffset" variation must also be
 // enabled.
 BASE_FEATURE(kAndroidBcivBottomControls,
              "AndroidBcivBottomControls",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #endif  // BUILDFLAG(IS_ANDROID)
 
@@ -59,7 +59,7 @@ BASE_FEATURE(kUseDrmBlackFullscreenOptimization,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -68,14 +68,14 @@ BASE_FEATURE(kUseFrameIntervalDecider,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kUseFrameIntervalDeciderNewAndroidFeatures,
              "UseFrameIntervalDeciderNewAndroidFeatures",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kTemporalSkipOverlaysWithRootCopyOutputRequests,
@@ -87,18 +87,18 @@ BASE_FEATURE(kUseMultipleOverlays,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 const char kMaxOverlaysParam[] = "max_overlays";
 
 BASE_FEATURE(kDelegatedCompositing,
              "DelegatedCompositing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAvoidDuplicateDelayBeginFrame,
              "AvoidDuplicateDelayBeginFrame",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kDrawQuadSplit[] = "num_of_splits";
 
@@ -106,7 +106,7 @@ const char kDrawQuadSplit[] = "num_of_splits";
 // can be split into during occlusion culling.
 BASE_FEATURE(kDrawQuadSplitLimit,
              "DrawQuadSplitLimit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<DelegatedCompositingMode>::Option
     kDelegatedCompositingModeOption[] = {
@@ -150,7 +150,7 @@ BASE_FEATURE(kDCompSurfacesForDelegatedInk,
 // user resizes the window.
 BASE_FEATURE(kRemoveRedirectionBitmap,
              "RemoveRedirectionBitmap",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Feature finched to stable 50% and launched.
@@ -164,14 +164,14 @@ BASE_FEATURE(kRenderPassDrawnRect,
 // display to wide color gamut if supported.
 BASE_FEATURE(kDynamicColorGamut,
              "DynamicColorGamut",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Submit CompositorFrame from SynchronousLayerTreeFrameSink directly to viz in
 // WebView.
 BASE_FEATURE(kVizFrameSubmissionForWebView,
              "VizFrameSubmissionForWebView",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_FUCHSIA)
 // Enables SkiaOutputDeviceBufferQueue instead of Vulkan swapchain on Fuchsia.
@@ -183,13 +183,13 @@ BASE_FEATURE(kUseSkiaOutputDeviceBufferQueue,
 // Whether we should log extra debug information to webrtc native log.
 BASE_FEATURE(kWebRtcLogCapturePipeline,
              "WebRtcLogCapturePipeline",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to debug Android WebView Vulkan composite. Composite to an intermediate
 // buffer and draw the intermediate buffer to the secondary command buffer.
 BASE_FEATURE(kWebViewVulkanIntermediateBuffer,
              "WebViewVulkanIntermediateBuffer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // Hardcoded as disabled for WebView to have a different default for
@@ -200,7 +200,7 @@ BASE_FEATURE(kUseSurfaceLayerForVideoDefault,
 
 BASE_FEATURE(kWebViewNewInvalidateHeuristic,
              "WebViewNewInvalidateHeuristic",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled and the device's SOC manufacturer satisifes the allowlist and
 // blocklist rules, WebView reports the set of threads involved in frame
@@ -224,7 +224,7 @@ const base::FeatureParam<std::string> kWebViewADPFSocManufacturerBlocklist{
 // this is a no-op.
 BASE_FEATURE(kWebViewEnableADPFRendererMain,
              "WebViewEnableADPFRendererMain",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the GPU Main thread is included in the set of threads reported
 // to the HWUI. This feature works only when WebViewEnableADPF is enabled,
@@ -244,7 +244,7 @@ BASE_FEATURE(kWebViewEnableADPFGpuMain,
 //   feature parameters.
 BASE_FEATURE(kCALayerNewLimit,
              "CALayerNewLimit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Set FeatureParam default to -1. CALayerOverlayProcessor choose the default in
 // ca_layer_overlay.cc When it's < 0.
 const base::FeatureParam<int> kCALayerNewLimitDefault{&kCALayerNewLimit,
@@ -258,7 +258,7 @@ const base::FeatureParam<int> kCALayerNewLimitManyVideos{&kCALayerNewLimit,
 // callback.
 BASE_FEATURE(kVSyncAlignedPresent,
              "VSyncAlignedPresent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kAllowUndamagedNonrootRenderPassToSkip,
@@ -266,7 +266,7 @@ BASE_FEATURE(kAllowUndamagedNonrootRenderPassToSkip,
 #if BUILDFLAG(IS_MAC)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables occlusion culling for TextureDrawQuads when possible.
@@ -289,7 +289,7 @@ BASE_FEATURE(kAllowForceMergeRenderPassWithRequireOverlayQuads,
 // OnBeginFrame we will send the Ack immediately, rather than batching it.
 BASE_FEATURE(kOnBeginFrameAcks,
              "OnBeginFrameAcks",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // if enabled, Any CompositorFrameSink of type video that defines a preferred
 // framerate that is below the display framerate will throttle OnBeginFrame
@@ -299,7 +299,7 @@ BASE_FEATURE(kOnBeginFrameThrottleVideo,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
              );
 
@@ -322,7 +322,7 @@ const base::FeatureParam<std::string> kADPFSocManufacturerBlocklist{
 // resources during a scroll.
 BASE_FEATURE(kEnableADPFScrollBoost,
              "EnableADPFScrollBoost",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Specifies how long after the boost mode is set, it will expire.
 const base::FeatureParam<base::TimeDelta> kADPFBoostTimeout{
@@ -356,7 +356,7 @@ BASE_FEATURE(kEnableADPFGpuCompositorThread,
 // report any timing hints from this session.
 BASE_FEATURE(kEnableADPFSeparateRendererMainSession,
              "EnableADPFSeparateRendererMainSession",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, Chrome uses SetThreads instead of recreating an
 // ADPF(Android Dynamic Performance Framework) hint session when the set of
@@ -369,7 +369,7 @@ BASE_FEATURE(kEnableADPFSetThreads,
 BASE_FEATURE(kDrawImmediatelyWhenInteractive,
              "DrawImmediatelyWhenInteractive",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -381,7 +381,7 @@ BASE_FEATURE(kDrawImmediatelyWhenInteractive,
 BASE_FEATURE(kAckOnSurfaceActivationWhenInteractive,
              "AckOnSurfaceActivationWhenInteractive",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -402,7 +402,7 @@ BASE_FEATURE(kUseDisplaySDRMaxLuminanceNits,
 // which can saves hundreds of MiB of memory with bfcache entries.
 BASE_FEATURE(kHideDelegatedFrameHostMac,
              "HideDelegatedFrameHostMac",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, ClientResourceProvider will attempt to unlock and delete
 // TransferableResources that have been returned as a part of eviction.
@@ -410,14 +410,14 @@ BASE_FEATURE(kHideDelegatedFrameHostMac,
 // Enabled by default 03/2014, kept to run a holdback experiment.
 BASE_FEATURE(kEvictionUnlocksResources,
              "EvictionUnlocksResources",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, FrameRateDecider will toggle to half framerate if there's only
 // one video on screen whose framerate is lower than the display vsync and in
 // perfect cadence.
 BASE_FEATURE(kSingleVideoFrameRateThrottling,
              "SingleVideoFrameRateThrottling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, ClientResourceProvider will take callbacks intended to be ran
 // on the Main-thread, and will batch them into a single jump to that thread.
@@ -448,7 +448,7 @@ BASE_FEATURE(kShouldLogFrameQuadInfo,
 // When disabled each callback will perform its own separate post task.
 BASE_FEATURE(kBatchResourceRelease,
              "BatchResourceRelease",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Do HDR color conversion per render pass update rect in renderer instead of
 // inserting a separate color conversion pass during surface aggregation.
@@ -461,13 +461,13 @@ BASE_FEATURE(kColorConversionInRenderer,
 // TODO(b/333940735): Should be removed if the issue isn't fixed.
 BASE_FEATURE(kLastVSyncArgsKillswitch,
              "LastVSyncArgsKillswitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Null Hypothesis test for viz. This will be used in an meta experiment to
 // judge finch variation.
 BASE_FEATURE(kVizNullHypothesis,
              "VizNullHypothesis",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Treat frame rates of 72hz as if they were 90Hz for buffer sizing purposes.
 BASE_FEATURE(kUse90HzSwapChainCountFor72fps,
@@ -479,7 +479,7 @@ BASE_FEATURE(kUse90HzSwapChainCountFor72fps,
 // content preferences. ChromeOS only.
 BASE_FEATURE(kCrosContentAdjustedRefreshRate,
              "CrosContentAdjustedRefreshRate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 int DrawQuadSplitLimit() {
diff --git a/content/common/features.cc b/content/common/features.cc
index 136290cb51f7b..94e6768b2690d 100644
--- a/content/common/features.cc
+++ b/content/common/features.cc
@@ -16,7 +16,7 @@ namespace features {
 //               https://www.chromestatus.com/feature/5669602927312896
 BASE_FEATURE(kAllowContentInitiatedDataUrlNavigations,
              "AllowContentInitiatedDataUrlNavigations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows Blink to request fonts from the Android Downloadable Fonts API through
 // the service implemented on the Java side.
@@ -34,7 +34,7 @@ BASE_FEATURE(kAndroidDragDropOopif,
 // param is not specified then this feature is ignored and the default is used.
 BASE_FEATURE(kBackForwardCacheTimeToLiveControl,
              "BackForwardCacheTimeToLiveControl",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the browser will schedule before unload tasks that continue
 // navigation network responses in a kHigh priority queue.
@@ -43,7 +43,7 @@ BASE_FEATURE(kBackForwardCacheTimeToLiveControl,
 BASE_FEATURE(kBeforeUnloadBrowserResponseQueue,
              "BeforeUnloadBrowserResponseQueue",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -56,7 +56,7 @@ BASE_FEATURE(kBeforeUnloadBrowserResponseQueue,
 //  - kBlockInsecurePrivateNetworkRequests
 BASE_FEATURE(kBlockInsecurePrivateNetworkRequestsFromUnknown,
              "BlockInsecurePrivateNetworkRequestsFromUnknown",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // Whether to hide paste popup on GestureScrollBegin or GestureScrollUpdate.
@@ -69,7 +69,7 @@ BASE_FEATURE(kHidePastePopupOnGSB,
 // to measure the impact.
 BASE_FEATURE(kHoldbackDebugReasonStringRemoval,
              "HoldbackDebugReasonStringRemoval",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If Canvas2D Image Chromium is allowed, this feature controls whether it is
 // enabled.
@@ -78,7 +78,7 @@ BASE_FEATURE(kCanvas2DImageChromium,
 #if BUILDFLAG(IS_APPLE)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -96,7 +96,7 @@ BASE_FEATURE(kCodeCacheDeletionWithoutFilter,
 // https://crbug.com/40148776.
 BASE_FEATURE(kCommittedOriginEnforcements,
              "CommittedOriginEnforcements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Turn on the tracking of origins committed in each renderer process in
 // ChildProcessSecurityPolicy. This is required for committed origin
@@ -104,7 +104,7 @@ BASE_FEATURE(kCommittedOriginEnforcements,
 // Temporarily disabled while investigating https://crbug.com/377793089.
 BASE_FEATURE(kCommittedOriginTracking,
              "CommittedOriginTracking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables support for the `Critical-CH` response header.
 // https://github.com/WICG/client-hints-infrastructure/blob/master/reliability.md#critical-ch
@@ -115,19 +115,19 @@ BASE_FEATURE(kCriticalClientHint,
 // Enable document policy negotiation mechanism.
 BASE_FEATURE(kDocumentPolicyNegotiation,
              "DocumentPolicyNegotiation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Requires documents embedded via <iframe>, etc, to explicitly opt-into the
 // embedding: https://github.com/mikewest/embedding-requires-opt-in.
 BASE_FEATURE(kEmbeddingRequiresOptIn,
              "EmbeddingRequiresOptIn",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables error reporting for JS errors inside DevTools frontend host
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
 BASE_FEATURE(kEnableDevToolsJsErrorReporting,
              "EnableDevToolsJsErrorReporting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
 
 // Content counterpart of ExperimentalContentSecurityPolicyFeatures in
@@ -135,7 +135,7 @@ BASE_FEATURE(kEnableDevToolsJsErrorReporting,
 // experimental Content Security Policy features ('navigate-to').
 BASE_FEATURE(kExperimentalContentSecurityPolicyFeatures,
              "ExperimentalContentSecurityPolicyFeatures",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allow specifying subsets of "name", "picture", "email" in the fields API.
 // Requires FedCmAuthz to be enabled.
@@ -147,18 +147,18 @@ BASE_FEATURE(kFedCmFlexibleFields,
 // and account labels features.
 BASE_FEATURE(kFedCmUseOtherAccountAndLabelsNewSyntax,
              "FedCmUseOtherAccountAndLabelsNewSyntax",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables sending SameSite=Lax cookies in credentialed FedCM requests
 // (accounts endpoint, ID assertion endpoint and disconnect endpoint).
 BASE_FEATURE(kFedCmSameSiteLax,
              "FedCmSameSiteLax",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables installed web app matching for getInstalledRelatedApps API.
 BASE_FEATURE(kFilterInstalledAppsWebAppMatching,
              "FilterInstalledAppsWebAppMatching",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #if BUILDFLAG(IS_WIN)
 // Enables installed windows app matching for getInstalledRelatedApps API.
 // Note: This is enabled by default as a kill switch, since the functionality
@@ -173,7 +173,7 @@ BASE_FEATURE(kFilterInstalledAppsWinMatching,
 // fail (return null to JavaScript).
 BASE_FEATURE(kFledgeLimitNumAuctions,
              "LimitNumFledgeAuctions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The number of allowed auctions for each page load (load to unload).
 const base::FeatureParam<int> kFledgeLimitNumAuctionsParam{
     &kFledgeLimitNumAuctions, "max_auctions_per_page", 8};
@@ -182,7 +182,7 @@ const base::FeatureParam<int> kFledgeLimitNumAuctionsParam{
 // immediately invalidating cached values.
 BASE_FEATURE(kFledgeDelayPostAuctionInterestGroupUpdate,
              "FledgeDelayPostAuctionInterestGroupUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables multi-threaded seller worklet.
 BASE_FEATURE(kFledgeSellerWorkletThreadPool,
@@ -233,18 +233,18 @@ const base::FeatureParam<int> kFrameRoutingCacheResponseSize{
 // sockets, so we don't need to renegotiate those connections.
 BASE_FEATURE(kGroupNIKByJoiningOrigin,
              "GroupNIKByJoiningOrigin",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature to experiment with removing the soft process limit. See
 // https://crbug.com/369342694.
 BASE_FEATURE(kRemoveRendererProcessLimit,
              "RemoveRendererProcessLimit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature flag for the memory-backed code cache.
 BASE_FEATURE(kInMemoryCodeCache,
              "InMemoryCodeCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the ability to use the updateIfOlderThanMs field in the trusted
 // bidding response to trigger a post-auction update if the group has been
@@ -269,20 +269,20 @@ BASE_FEATURE(kMediaDevicesSystemMonitorCache,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Allow cross-context transfer of MediaStreamTracks.
 BASE_FEATURE(kMediaStreamTrackTransfer,
              "MediaStreamTrackTransfer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled Mojo uses a dedicated background thread to listen for incoming
 // IPCs. Otherwise it's configured to use Content's IO thread for that purpose.
 BASE_FEATURE(kMojoDedicatedThread,
              "MojoDedicatedThread",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, additional spare RPHs will be warmed up when the browser is
 // not busy.
@@ -329,7 +329,7 @@ BASE_FEATURE(kPrerenderMoreCorrectSpeculativeRFHCreation,
 // RenderProcessHost even when there is a priority override.
 BASE_FEATURE(kPriorityOverridePendingViews,
              "PriorityOverridePendingViews",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables exposure of the core milestone 1 (M1) APIs in the renderer without an
 // origin trial token: Attribution Reporting, FLEDGE, Topics.
@@ -343,14 +343,14 @@ BASE_FEATURE(kPrivacySandboxAdsAPIsM1Override,
 // chrome window, when we start interacting with another window.
 BASE_FEATURE(kContinueGestureOnLosingFocus,
              "ContinueGestureOnLosingFocus",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 
 // Make sendBeacon throw for a Blob with a non simple type.
 BASE_FEATURE(kSendBeaconThrowForBlobWithNonSimpleType,
              "SendBeaconThrowForBlobWithNonSimpleType",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, try to reuse an unlocked renderer process when COOP swap is
 // happening on prerender initial navigation. Please see crbug.com/41492112 for
@@ -358,7 +358,7 @@ BASE_FEATURE(kSendBeaconThrowForBlobWithNonSimpleType,
 BASE_FEATURE(kProcessReuseOnPrerenderCOOPSwap,
              "ProcessReuseOnPrerenderCOOPSwap",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -373,7 +373,7 @@ BASE_FEATURE(kReloadHiddenTabsWithCrashedSubframes,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -385,7 +385,7 @@ BASE_FEATURE(kReloadHiddenTabsWithCrashedSubframes,
 // now anyway; they don't work.
 BASE_FEATURE(kRestrictOrientationLockToPhones,
              "RestrictOrientationLockToPhones",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kServiceWorkerAvoidMainThreadForInitialization,
@@ -393,7 +393,7 @@ BASE_FEATURE(kServiceWorkerAvoidMainThreadForInitialization,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -405,7 +405,7 @@ BASE_FEATURE(kServiceWorkerAvoidMainThreadForInitialization,
 // 20F0D78B280E40C0A17ABB568ACF4BDAFFB9649ADA75B0675F962B3F4FC78EA4
 BASE_FEATURE(kServiceWorkerBypassFetchHandlerHashStrings,
              "ServiceWorkerBypassFetchHandlerHashStrings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string>
     kServiceWorkerBypassFetchHandlerBypassedHashStrings{
         &kServiceWorkerBypassFetchHandlerHashStrings,
@@ -444,13 +444,13 @@ BASE_FEATURE(kServiceWorkerClientUrlIsCreationUrl,
 // crashed frame.
 BASE_FEATURE(kSkipEarlyCommitPendingForCrashedFrame,
              "SkipEarlyCommitPendingForCrashedFrame",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 // Skip granting access to the data path if it has already been set.
 BASE_FEATURE(kSkipGrantAccessToDataPathIfAlreadySet,
              "SkipGrantAccessToDataPathIfAlreadySet",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_MAC)
@@ -468,28 +468,28 @@ BASE_FEATURE(kTouchpadOverscrollHistoryNavigation,
 #if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Enable TrustedTypes .fromLiteral support.
 BASE_FEATURE(kTrustedTypesFromLiteral,
              "TrustedTypesFromLiteral",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Validate the code signing identity of the network process before establishing
 // a Mojo connection with it.
 #if BUILDFLAG(IS_MAC)
 BASE_FEATURE(kValidateNetworkServiceProcessIdentity,
              "ValidateNetworkServiceProcessIdentity",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_MAC)
 
 // Pre-warm up the network process on browser startup.
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kWarmUpNetworkProcess,
              "WarmUpNetworkProcess",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enable WebAssembly dynamic tiering (only tier up hot functions).
@@ -500,13 +500,13 @@ BASE_FEATURE(kWebAssemblyDynamicTiering,
 // Enables in-process resource loading for WebUI renderer processes.
 BASE_FEATURE(kWebUIInProcessResourceLoading,
              "WebUIInProcessResourceLoading",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables WebOTP calls in cross-origin iframes if allowed by Permissions
 // Policy.
 BASE_FEATURE(kWebOTPAssertionFeaturePolicy,
              "WebOTPAssertionFeaturePolicy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Flag guard for fix for crbug.com/40942531.
 BASE_FEATURE(kLimitCrossOriginNonActivatedPaintHolding,
diff --git a/content/public/common/content_features.cc b/content/public/common/content_features.cc
index 15e57952ede1d..9c4ac3d5a611a 100644
--- a/content/public/common/content_features.cc
+++ b/content/public/common/content_features.cc
@@ -30,12 +30,12 @@ BASE_FEATURE(kAdditionalOpaqueOriginEnforcements,
 // hangs. In practice, this means if GPU launch hanges, then retry it once.
 BASE_FEATURE(kAndroidFallbackToNextSlot,
              "AndroidFallbackToNextSlot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Warm up a spare renderer after each navigation on Android.
 BASE_FEATURE(kAndroidWarmUpSpareRendererWithTimeout,
              "AndroidWarmUpSpareRendererWithTimeout",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Create the spare renderer in DidStopLoading rather than in
 // SpareRenderProcessHostManager::PrepareForFutureRequests.
@@ -70,7 +70,7 @@ const base::FeatureParam<int> kAndroidSpareRendererMemoryThreshold{
 // Launches the audio service on the browser startup.
 BASE_FEATURE(kAudioServiceLaunchOnStartup,
              "AudioServiceLaunchOnStartup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Runs the audio service in a separate process.
 BASE_FEATURE(kAudioServiceOutOfProcess,
@@ -78,7 +78,7 @@ BASE_FEATURE(kAudioServiceOutOfProcess,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -89,7 +89,7 @@ BASE_FEATURE(kAudioServiceSandbox,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_FUCHSIA)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -131,14 +131,14 @@ BASE_FEATURE(kBackForwardCacheMemoryControls,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // If enabled, makes battery saver request heavy align wake ups.
 BASE_FEATURE(kBatterySaverModeAlignWakeUps,
              "BatterySaverModeAlignWakeUps",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When this feature is enabled, private network requests initiated from
 // non-secure contexts in the `public` address space  are blocked.
@@ -149,7 +149,7 @@ BASE_FEATURE(kBatterySaverModeAlignWakeUps,
 //  - kBlockInsecurePrivateNetworkRequestsFromUnknown
 BASE_FEATURE(kBlockInsecurePrivateNetworkRequests,
              "BlockInsecurePrivateNetworkRequests",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When this feature is enabled, requests to localhost initiated from non-secure
 // contexts in the `private` IP address space are blocked.
@@ -159,7 +159,7 @@ BASE_FEATURE(kBlockInsecurePrivateNetworkRequests,
 //  - kBlockInsecurePrivateNetworkRequests
 BASE_FEATURE(kBlockInsecurePrivateNetworkRequestsFromPrivate,
              "BlockInsecurePrivateNetworkRequestsFromPrivate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables use of the PrivateNetworkAccessNonSecureContextsAllowed deprecation
 // trial. This is a necessary yet insufficient condition: documents that wish to
@@ -172,7 +172,7 @@ BASE_FEATURE(kBlockInsecurePrivateNetworkRequestsDeprecationTrial,
 // This is no-op if the network service is hosted in the browser process.
 BASE_FEATURE(kBrokerFileOperationsOnDiskCacheInNetworkService,
              "BrokerFileOperationsOnDiskCacheInNetworkService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows pages with cache-control:no-store to enter the back/forward cache.
 // Feature params can specify whether pages with cache-control:no-store can be
@@ -194,18 +194,18 @@ BASE_FEATURE(kCapturedSurfaceControlKillswitch,
 // swap BrowsingContextGroups(BrowsingInstances).
 BASE_FEATURE(kClearCrossSiteCrossBrowsingContextGroupWindowName,
              "ClearCrossSiteCrossBrowsingContextGroupWindowName",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCompositeBGColorAnimation,
              "CompositeBGColorAnimation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Gate access to cookie deprecation API which allows developers to opt in
 // server side testing without cookies.
 // (See https://developer.chrome.com/en/docs/privacy-sandbox/chrome-testing)
 BASE_FEATURE(kCookieDeprecationFacilitatedTesting,
              "CookieDeprecationFacilitatedTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Set whether to enable cookie deprecation API for off-the-record profiles.
 const base::FeatureParam<bool>
@@ -235,7 +235,7 @@ const char kCookieDeprecationTestingDisableAdsAPIsName[] = "disable_ads_apis";
 // created while the network service is sending the request in parallel.
 BASE_FEATURE(kDeferSpeculativeRFHCreation,
              "DeferSpeculativeRFHCreation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // When enabled, the browser will create the render process if necessary even
 // if the speculative render frame host creation is deferred by feature
 // DeferSpeculativeRFHCreation.
@@ -270,7 +270,7 @@ BASE_FEATURE(kDeleteStaleSessionCookiesOnStartup,
 // disabled, no such pages will be in the cache.
 BASE_FEATURE(kDeviceBoundSessionTerminationEvictBackForwardCache,
              "DeviceBoundSessionTerminationEvictBackForwardCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the DevTools Privacy UI is displayed.
 BASE_FEATURE(kDevToolsPrivacyUI,
@@ -284,7 +284,7 @@ BASE_FEATURE(kDigitalGoodsApi,
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -349,14 +349,14 @@ const base::FeatureParam<base::TimeDelta> kBtmClientBounceDetectionTimeout{
     &kBtm, "client_bounce_detection_timeout", base::Seconds(10)};
 
 // Enables Bounce Tracking Mitigations for Dual Use sites.
-BASE_FEATURE(kBtmDualUse, "BtmDualUse", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kBtmDualUse, "BtmDualUse", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables HW decode acceleration for WebRTC.
 BASE_FEATURE(kWebRtcHWDecoding,
              "webrtc-hw-decoding",
 // TODO: b/336314537 Re enable HW Decoding once the GPU Hang is resolved
 #if BUILDFLAG(PLATFORM_CFM)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -370,7 +370,7 @@ BASE_FEATURE(kWebRtcHWEncoding,
 // Eliminates the need to destroy the WebContents object to free its resources.
 BASE_FEATURE(kWebContentsDiscard,
              "WebContentsDiscard",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the Origin Trial of Document-Isolation-Policy.
 BASE_FEATURE(kDocumentIsolationPolicyOriginTrial,
@@ -380,33 +380,33 @@ BASE_FEATURE(kDocumentIsolationPolicyOriginTrial,
 // Enable drawing under System Bars within DisplayCutout.
 BASE_FEATURE(kDrawCutoutEdgeToEdge,
              "DrawCutoutEdgeToEdge",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable establishing the GPU channel early in renderer startup.
 BASE_FEATURE(kEarlyEstablishGpuChannel,
              "EarlyEstablishGpuChannel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables canvas 2d methods BeginLayer and EndLayer.
 BASE_FEATURE(kEnableCanvas2DLayers,
              "EnableCanvas2DLayers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables service workers on chrome-untrusted:// urls.
 BASE_FEATURE(kEnableServiceWorkersForChromeUntrusted,
              "EnableServiceWorkersForChromeUntrusted",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables service workers on chrome:// urls.
 BASE_FEATURE(kEnableServiceWorkersForChromeScheme,
              "EnableServiceWorkersForChromeScheme",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Ensures the renderer is not dead when getting the process host for a site
 // instance.
 BASE_FEATURE(kEnsureExistingRendererAlive,
              "EnsureExistingRendererAlive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables JavaScript API to intermediate federated identity requests.
 // Note that actual exposure of the FedCM API to web content is controlled
@@ -419,13 +419,13 @@ BASE_FEATURE(kFedCm, "FedCm", base::FEATURE_ENABLED_BY_DEFAULT);
 // log in to another IDP account, if the IDP opts in.
 BASE_FEATURE(kFedCmUseOtherAccount,
              "FedCmUseOtherAccount",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Support usernames and phone numbers to identify users, instead of
 // (or in addition to) names and emails.
 BASE_FEATURE(kFedCmAlternativeIdentifiers,
              "FedCmAlternativeIdentifiers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables usage of the FedCM Authz API.
 // Note that actual exposure of the API to web content is controlled by
@@ -446,22 +446,22 @@ BASE_FEATURE(kFedCmButtonMode,
 // Enables cooldown on ignore in FedCM API.
 BASE_FEATURE(kFedCmCooldownOnIgnore,
              "FedCmCooldownOnIgnore",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables usage of the FedCM Delegation API.
 BASE_FEATURE(kFedCmDelegation,
              "FedCmDelegation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables usage of the FedCM IdP Registration API.
 BASE_FEATURE(kFedCmIdPRegistration,
              "FedCmIdPregistration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables usage of the FedCM API with metrics endpoint at the same time.
 BASE_FEATURE(kFedCmMetricsEndpoint,
              "FedCmMetricsEndpoint",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables usage of the FedCM API with multiple identity providers at the same
 // time.
@@ -473,7 +473,7 @@ BASE_FEATURE(kFedCmMultipleIdentityProviders,
 // time.
 BASE_FEATURE(kFedCmSelectiveDisclosure,
              "FedCmSelectiveDisclosure",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables showing filtered out accounts in FedCM UI after the user attempts to
 // login to an account. These accounts are shown greyed out.
@@ -484,17 +484,17 @@ BASE_FEATURE(kFedCmShowFilteredAccounts,
 // Enables bypassing the well-known file enforcement.
 BASE_FEATURE(kFedCmWithoutWellKnownEnforcement,
              "FedCmWithoutWellKnownEnforcement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Lightweight FedCM Mode
 BASE_FEATURE(kFedCmLightweightMode,
              "FedCmLightweightMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables browser-side focus verification when crossing fenced boundaries.
 BASE_FEATURE(kFencedFramesEnforceFocus,
              "FencedFramesEnforceFocus",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is a kill switch for focusing the RenderWidgetHostViewAndroid on
 // ActionDown on every touch sequence if not focused already, please see
@@ -522,37 +522,37 @@ BASE_FEATURE(kWebIdentityDigitalCredentials,
 // Enables the Digital Credentials Creation API.
 BASE_FEATURE(kWebIdentityDigitalCredentialsCreation,
              "WebIdentityDigitalCredentialsCreation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables scrollers inside Blink to store scroll offsets in fractional
 // floating-point numbers rather than truncating to integers.
 BASE_FEATURE(kFractionalScrollOffsets,
              "FractionalScrollOffsets",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Puts network quality estimate related Web APIs in the holdback mode. When the
 // holdback is enabled the related Web APIs return network quality estimate
 // set by the experiment (regardless of the actual quality).
 BASE_FEATURE(kNetworkQualityEstimatorWebHoldback,
              "NetworkQualityEstimatorWebHoldback",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether GuestViews (see components/guest_view/README.md) are implemented
 // using MPArch inner pages. See https://crbug.com/40202416
 BASE_FEATURE(kGuestViewMPArch,
              "GuestViewMPArch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // See crbug.com/359623664
 BASE_FEATURE(kIdbPrioritizeForegroundClients,
              "IdbPrioritizeForegroundClients",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether we ignore duplicate navigations or not, in favor of
 // preserving the already ongoing navigation.
 BASE_FEATURE(kIgnoreDuplicateNavs,
              "IgnoreDuplicateNavs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kDuplicateNavThreshold,
                    &kIgnoreDuplicateNavs,
@@ -580,7 +580,7 @@ BASE_FEATURE(kIsolatedWebApps,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 // Enables a new Automatic Fullscreen content setting that lets allowlisted
@@ -596,14 +596,14 @@ BASE_FEATURE(kAutomaticFullscreenContentSetting,
 // for rationale and more details.
 BASE_FEATURE(kIsolateFencedFrames,
              "IsolateFencedFrames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Alternative to switches::kIsolateOrigins, for turning on origin isolation.
 // List of origins to isolate has to be specified via
 // kIsolateOriginsFieldTrialParamName.
 BASE_FEATURE(kIsolateOrigins,
              "IsolateOrigins",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const char kIsolateOriginsFieldTrialParamName[] = "OriginsList";
 
 // Enable lazy initialization of the media controls.
@@ -614,7 +614,7 @@ BASE_FEATURE(kLazyInitializeMediaControls,
 BASE_FEATURE(kLogJsConsoleMessages,
              "LogJsConsoleMessages",
 #if BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_DESKTOP_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -632,7 +632,7 @@ BASE_FEATURE(kMBIMode,
     BUILDFLAG(MBI_MODE_PER_SITE_INSTANCE)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 const base::FeatureParam<MBIMode>::Option mbi_mode_types[] = {
@@ -655,7 +655,7 @@ const base::FeatureParam<MBIMode> kMBIModeParam {
 // If the feature is not enabled, then the epsilon value will be 1.1.
 BASE_FEATURE(kNavigationConfidenceEpsilon,
              "NavigationConfidenceEpsilon",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // The epsilon value returned if `kNavigationConfidenceNoise` is enabled.
 const base::FeatureParam<double> kNavigationConfidenceEpsilonValue{
     &kNavigationConfidenceEpsilon, "navigation-confidence-epsilon-value", 1.1};
@@ -666,7 +666,7 @@ const base::FeatureParam<double> kNavigationConfidenceEpsilonValue{
 BASE_FEATURE(kNavigationNetworkResponseQueue,
              "NavigationNetworkResponseQueue",
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -678,14 +678,14 @@ BASE_FEATURE(kNetworkServiceInProcess,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Feature which holdbacks NoStatePrefetch on all surfaces.
 BASE_FEATURE(kNoStatePrefetchHoldback,
              "NoStatePrefetchHoldback",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls the Origin-Agent-Cluster header. Tracking bug
 // https://crbug.com/1042415; flag removal bug (for when this is fully launched)
@@ -708,7 +708,7 @@ BASE_FEATURE(kOverscrollHistoryNavigation,
 // See https://explainers-by-googlers.github.io/partitioned-popins/
 BASE_FEATURE(kPartitionedPopinsHeaderPolicyBypass,
              "PartitionedPopinsHeaderPolicyBypass",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables additional ChildProcessSecurityPolicy enforcements for PDF renderer
 // processes, including blocking storage and cookie access for them.
@@ -722,7 +722,7 @@ BASE_FEATURE(kPdfEnforcements,
 // Whether web apps can run periodic tasks upon network connectivity.
 BASE_FEATURE(kPeriodicBackgroundSync,
              "PeriodicBackgroundSync",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, browser-initiated prefetch is allowed.
 // Please see crbug.com/40946257 for more details.
@@ -742,7 +742,7 @@ BASE_FEATURE(kPrerender2NewLimitAndScheduler,
 // within these APIs.
 BASE_FEATURE(kPrivacySandboxAdsAPIsOverride,
              "PrivacySandboxAdsAPIsOverride",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Private Network Access checks for all types of web workers.
 //
@@ -781,7 +781,7 @@ BASE_FEATURE(kPrivateNetworkAccessForWorkersWarningOnly,
 //  - `kPrivateNetworkAccessRespectPreflightResults`
 BASE_FEATURE(kPrivateNetworkAccessForNavigations,
              "PrivateNetworkAccessForNavigations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Private Network Access checks in warning mode for navigations.
 //
@@ -792,14 +792,14 @@ BASE_FEATURE(kPrivateNetworkAccessForNavigations,
 // one fails, a warning is simply displayed in DevTools.
 BASE_FEATURE(kPrivateNetworkAccessForNavigationsWarningOnly,
              "PrivateNetworkAccessForNavigationsWarningOnly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Requires that CORS preflight requests succeed before sending private network
 // requests. This flag implies `kPrivateNetworkAccessSendPreflights`.
 // See: https://wicg.github.io/private-network-access/#cors-preflight
 BASE_FEATURE(kPrivateNetworkAccessRespectPreflightResults,
              "PrivateNetworkAccessRespectPreflightResults",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables sending CORS preflight requests ahead of private network requests.
 // See: https://wicg.github.io/private-network-access/#cors-preflight
@@ -813,14 +813,14 @@ BASE_FEATURE(kPrivateNetworkAccessSendPreflights,
 // require origin-agent-clusters.
 BASE_FEATURE(kOriginKeyedProcessesByDefault,
              "OriginKeyedProcessesByDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Fires the `pushsubscriptionchange` event defined here:
 // https://w3c.github.io/push-api/#the-pushsubscriptionchange-event
 // for subscription refreshes, revoked permissions or subscription losses
 BASE_FEATURE(kPushSubscriptionChangeEvent,
              "PushSubscriptionChangeEvent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, queues navigations instead of cancelling the previous
 // navigation if the previous navigation is already waiting for commit.
@@ -838,7 +838,7 @@ BASE_FEATURE(kQueueNavigationsWhileWaitingForCommit,
 // exceptions are revoked and browser restart occurs.
 BASE_FEATURE(kReduceSubresourceResponseStartedIPC,
              "ReduceSubresourceResponseStartedIPC",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
 // When a Web application is video-capturing a tab, it can use the Region
@@ -851,7 +851,7 @@ BASE_FEATURE(kReduceSubresourceResponseStartedIPC,
 // a CropTarget).
 BASE_FEATURE(kRegionCaptureOfOtherTabs,
              "RegionCaptureOfOtherTabs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
 
 // RenderDocument:
@@ -873,17 +873,17 @@ BASE_FEATURE(kRenderDocument,
 // low priority.
 BASE_FEATURE(kRestrictThreadPoolInBackground,
              "RestrictThreadPoolInBackground",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Set a tri-state priority on v8 isolates reflecting the renderer priority.
 BASE_FEATURE(kSetIsolatesPriority,
              "SetIsolatesPriority",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Reuse compositor instances with RenderDocument
 BASE_FEATURE(kRenderDocumentCompositorReuse,
              "RenderDocumentCompositorReuse",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables retrying to obtain list of available cameras after restarting the
 // video capture service if a previous attempt failed, which could be caused
@@ -893,7 +893,7 @@ BASE_FEATURE(kRetryGetVideoCaptureDeviceInfos,
 #if BUILDFLAG(IS_MAC)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -903,7 +903,7 @@ BASE_FEATURE(kRetryGetVideoCaptureDeviceInfos,
 // the number of main frames in that process stays below a threshold.
 BASE_FEATURE(kProcessPerSiteUpToMainFrameThreshold,
              "ProcessPerSiteUpToMainFrameThreshold",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Specifies the threshold for `kProcessPerSiteUpToMainFrameThreshold` feature.
 constexpr base::FeatureParam<int> kProcessPerSiteMainFrameThreshold{
@@ -955,7 +955,7 @@ constexpr base::FeatureParam<double> kProcessPerSiteMainFrameTotalMemoryLimit{
 // crbug.com/1472634 for more details.
 BASE_FEATURE(kServiceWorkerAutoPreload,
              "ServiceWorkerAutoPreload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // crbug.com/374606637: When this is enabled, race-network-and-fetch-hander will
 // prioritize the response processing for the network request over the
@@ -963,19 +963,19 @@ BASE_FEATURE(kServiceWorkerAutoPreload,
 BASE_FEATURE(
     kServiceWorkerStaticRouterRaceNetworkRequestPerformanceImprovement,
     "ServiceWorkerStaticRouterRaceNetworkRequestPerformanceImprovement",
-    base::FEATURE_DISABLED_BY_DEFAULT);
+    base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Run video capture service in the Browser process as opposed to a dedicated
 // utility process.
 BASE_FEATURE(kRunVideoCaptureServiceInBrowserProcess,
              "RunVideoCaptureServiceInBrowserProcess",
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 );
 
 // Update scheduler settings using resourced on ChromeOS.
 BASE_FEATURE(kSchedQoSOnResourcedForChrome,
              "SchedQoSOnResourcedForChrome",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Browser-side feature flag for Secure Payment Confirmation (SPC) that also
 // controls the render side feature state. SPC is not currently available on
@@ -985,7 +985,7 @@ BASE_FEATURE(kSecurePaymentConfirmation,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN) || BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -995,7 +995,7 @@ BASE_FEATURE(kSecurePaymentConfirmation,
 // such devices as UbiKey on Linux, which can make development easier.
 BASE_FEATURE(kSecurePaymentConfirmationDebug,
              "SecurePaymentConfirmationDebug",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Service worker based payment apps as defined by w3c here:
 // https://w3c.github.io/webpayments-payment-apps-api/
@@ -1015,7 +1015,7 @@ BASE_FEATURE(kSharedArrayBuffer,
 // https://crbug.com/333029146 replaces COOP restrict-properties.
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1023,14 +1023,14 @@ BASE_FEATURE(kSharedArrayBuffer,
 // focus
 BASE_FEATURE(kUserMediaCaptureOnFocus,
              "UserMediaCaptureOnFocus",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature to enable using the update token in the manifest or icon url
 // changes to detect app updates. When this is enabled, automatic icon
 // downloading is disabled.
 BASE_FEATURE(kWebAppEnableUpdateTokenParsing,
              "WebAppEnableUpdateTokenParsing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is intended as a kill switch for the WebOTP Service feature. To enable
 // this feature, the experimental web platform features flag should be set.
@@ -1040,7 +1040,7 @@ BASE_FEATURE(kWebOTP, "WebOTP", base::FEATURE_ENABLED_BY_DEFAULT);
 // (https://github.com/WICG/lock-screen) in Chrome.
 BASE_FEATURE(kWebLockScreenApi,
              "WebLockScreenApi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, puts subframe data: URLs in a separate SiteInstance in the same
 // SiteInstanceGroup as the initiator.
@@ -1053,7 +1053,7 @@ BASE_FEATURE(kSiteInstanceGroupsForDataUrls,
 // SiteInstance.
 BASE_FEATURE(kDefaultSiteInstanceGroups,
              "DefaultSiteInstanceGroups",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether to isolate sites of documents that specify an eligible
 // Cross-Origin-Opener-Policy header.  Note that this is only intended to be
@@ -1065,7 +1065,7 @@ BASE_FEATURE(kSiteIsolationForCrossOriginOpenerPolicy,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 // This feature param (true by default) controls whether sites are persisted
@@ -1093,7 +1093,7 @@ const base::FeatureParam<base::TimeDelta>
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kFontDataServiceAllWebContents,
              "FontDataServiceAllWebContents",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<FontDataServiceTypefaceType>::Option
     font_data_service_typeface[] = {
         {FontDataServiceTypefaceType::kDwrite, "DWrite"},
@@ -1109,7 +1109,7 @@ const base::FeatureParam<FontDataServiceTypefaceType>
 // unrelated tabs.
 BASE_FEATURE(kDisableProcessReuse,
              "DisableProcessReuse",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether SpareRenderProcessHostManager tries to always have a warm
 // spare renderer process around for the most recently requested BrowserContext.
@@ -1122,7 +1122,7 @@ BASE_FEATURE(kSpareRendererForSitePerProcess,
 // eTLD+1.
 BASE_FEATURE(kStrictOriginIsolation,
              "StrictOriginIsolation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether subframe process reuse should be restricted according to
 // resource usage policies. Namely, a process that is already consuming too
@@ -1145,14 +1145,14 @@ constexpr base::FeatureParam<double> kSubframeProcessReuseMemoryThreshold{
 // is not same origin with the main frame.
 BASE_FEATURE(kSuppressDifferentOriginSubframeJSDialogs,
              "SuppressDifferentOriginSubframeJSDialogs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Dispatch touch events to "SyntheticGestureController" for events from
 // Devtool Protocol Input.dispatchTouchEvent to simulate touch events close to
 // real OS events.
 BASE_FEATURE(kSyntheticPointerActions,
              "SyntheticPointerActions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature allows touch dragging and a context menu to occur
 // simultaneously, with the assumption that the menu is non-modal.  Without this
@@ -1164,7 +1164,7 @@ BASE_FEATURE(kTouchDragAndContextMenu,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1185,7 +1185,7 @@ const base::FeatureParam<int> kTouchDragMovementThresholdDip{
 // processes are considered for reuse.
 BASE_FEATURE(kTrackEmptyRendererProcessesForReuse,
              "TrackEmptyRendererProcessesForReuse",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature is for a reverse Origin Trial, enabling SharedArrayBuffer for
 // sites as they migrate towards requiring cross-origin isolation for these
@@ -1195,7 +1195,7 @@ BASE_FEATURE(kTrackEmptyRendererProcessesForReuse,
 // https://crbug.com/1144104
 BASE_FEATURE(kUnrestrictedSharedArrayBuffer,
              "UnrestrictedSharedArrayBuffer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable using browser-calculated origins on navigations, instead of
 // renderer-calculated ones.
@@ -1207,7 +1207,7 @@ BASE_FEATURE(kUseBrowserCalculatedOrigin,
 // If enabled, blink's context snapshot is used rather than the v8 snapshot.
 BASE_FEATURE(kUseContextSnapshot,
              "UseContextSnapshot",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enables comparing browser and renderer's DidCommitProvisionalLoadParams in
@@ -1217,7 +1217,7 @@ BASE_FEATURE(kVerifyDidCommitParams,
              base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables future V8 VM features
-BASE_FEATURE(kV8VmFuture, "V8VmFuture", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kV8VmFuture, "V8VmFuture", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables per PWA System Media Controls. Only supported on Windows and macOS.
 BASE_FEATURE(kWebAppSystemMediaControls,
@@ -1230,7 +1230,7 @@ BASE_FEATURE(kWebAppSystemMediaControls,
              // safe to only disable the failing platform (ie. macOS here).
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN)
 
 // Enable WebAssembly baseline compilation (Liftoff).
@@ -1249,13 +1249,13 @@ BASE_FEATURE(kWebAssemblyBaseline,
 // sending a RestrictionTarget).
 BASE_FEATURE(kElementCaptureOfOtherTabs,
              "ElementCaptureOfOtherTabs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_IOS)
 
 // Enable WebAssembly JSPI.
 BASE_FEATURE(kEnableExperimentalWebAssemblyJSPI,
              "WebAssemblyExperimentalJSPI",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable WebAssembly lazy compilation (JIT on first call).
 BASE_FEATURE(kWebAssemblyLazyCompilation,
@@ -1277,13 +1277,13 @@ BASE_FEATURE(kWebAssemblyTrapHandler,
      defined(ARCH_CPU_ARM64))
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Controls whether the Web Bluetooth API is enabled:
 // https://webbluetoothcg.github.io/web-bluetooth/
-BASE_FEATURE(kWebBluetooth, "WebBluetooth", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kWebBluetooth, "WebBluetooth", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether Web Bluetooth should use the new permissions backend. The
 // new permissions backend uses ObjectPermissionContextBase, which is used by
@@ -1292,13 +1292,13 @@ BASE_FEATURE(kWebBluetooth, "WebBluetooth", base::FEATURE_DISABLED_BY_DEFAULT);
 // also enabled.
 BASE_FEATURE(kWebBluetoothNewPermissionsBackend,
              "WebBluetoothNewPermissionsBackend",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls which backend is used to retrieve OTP on Android. When disabled
 // we use User Consent API.
 BASE_FEATURE(kWebOtpBackendAuto,
              "WebOtpBackendAuto",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The JavaScript API for payments on the web.
 BASE_FEATURE(kWebPayments, "WebPayments", base::FEATURE_ENABLED_BY_DEFAULT);
@@ -1306,13 +1306,13 @@ BASE_FEATURE(kWebPayments, "WebPayments", base::FEATURE_ENABLED_BY_DEFAULT);
 // Enables code caching for scripts used on WebUI pages.
 BASE_FEATURE(kWebUICodeCache,
              "WebUICodeCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables build-time generated resource-bundled code caches for WebUI pages.
 // See crbug.com/375509504 for details.
 BASE_FEATURE(kWebUIBundledCodeCache,
              "WebUIBundledCodeCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables populating the WebUI URL to code cache resource map.
 const base::FeatureParam<bool> kWebUIBundledCodeCacheGenerateResourceMap{
@@ -1347,25 +1347,25 @@ BASE_FEATURE(kWebPermissionsApi,
 // the web contents.
 BASE_FEATURE(kAccessibilityDeprecateTypeAnnounce,
              "AccessibilityDeprecateTypeAnnounce",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, includes the ACTION_LONG_CLICK action to all relevant nodes in
 // the web contents accessibility tree.
 BASE_FEATURE(kAccessibilityIncludeLongClickAction,
              "AccessibilityIncludeLongClickAction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the second iteration of AccessibilityPageZoom, which continues
 // the work completed in the first experiment and the subsequent fast-follow.
 // This version of the experiment explores enabling OS-level adjustments.
 BASE_FEATURE(kAccessibilityPageZoomV2,
              "AccessibilityPageZoomV2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the use of a unified code path for AXTree snapshots.
 BASE_FEATURE(kAccessibilityUnifiedSnapshots,
              "AccessibilityUnifiedSnapshots",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables posting registering, unregistering the broadcast receiver to the
 // background thread.
@@ -1376,11 +1376,11 @@ BASE_FEATURE(kAccessibilityManageBroadcastReceiverOnBackground,
 // Enable open PDF inline on Android.
 BASE_FEATURE(kAndroidOpenPdfInline,
              "AndroidOpenPdfInline",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows the use of "Smart Zoom", an alternative form of page zoom, and
 // enables the associated UI.
-BASE_FEATURE(kSmartZoom, "SmartZoom", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kSmartZoom, "SmartZoom", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Skips clearing objects on main document ready. Only has an impact
 // when gin java bridge is enabled.
@@ -1392,7 +1392,7 @@ BASE_FEATURE(kGinJavaBridgeMojoSkipClearObjectsOnMainDocumentReady,
 // to be killed first if the OS needs more memory.
 BASE_FEATURE(kReduceGpuPriorityOnBackground,
              "ReduceGpuPriorityOnBackground",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Screen Capture API support for Android.
 // This should not be enabled unless ENABLE_SCREEN_CAPTURE is on, otherwise
@@ -1402,7 +1402,7 @@ BASE_FEATURE(kUserMediaScreenCapturing,
 #if BUILDFLAG(ENABLE_SCREEN_CAPTURE)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 #endif  // BUILDFLAG(IS_ANDROID)
@@ -1411,7 +1411,7 @@ BASE_FEATURE(kUserMediaScreenCapturing,
 // Enables backgrounding hidden renderers on Mac.
 BASE_FEATURE(kMacAllowBackgroundingRenderProcesses,
              "MacAllowBackgroundingRenderProcesses",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables a fix for a macOS IME Live Conversion issue. crbug.com/40226470 and
 // crbug.com/40060200
@@ -1421,13 +1421,13 @@ BASE_FEATURE(kMacImeLiveConversionFix,
 
 BASE_FEATURE(kMacSyscallSandbox,
              "MacSyscallSandbox",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Changes how Chrome responds to accessibility activation signals on macOS
 // Sonoma, to avoid unnecessary changes to the screen reader state.
 BASE_FEATURE(kSonomaAccessibilityActivationRefinements,
              "SonomaAccessibilityActivationRefinements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #endif  // BUILDFLAG(IS_MAC)
 
@@ -1438,7 +1438,7 @@ const base::FeatureParam<int> kNavigationCapturingIPHGuardrailStorageDuration{
 
 BASE_FEATURE(kPwaNavigationCapturing,
              "PwaNavigationCapturing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<CapturingState>::Option kNavigationCapturingParams[] =
     {{CapturingState::kDefaultOn, "on_by_default"},
      {CapturingState::kDefaultOff, "off_by_default"},
diff --git a/device/fido/features.cc b/device/fido/features.cc
index 80668ef074c91..d6d57ac1b8534 100644
--- a/device/fido/features.cc
+++ b/device/fido/features.cc
@@ -35,7 +35,7 @@ BASE_FEATURE(kWebAuthUseNativeWinApi,
 // Permanent flag
 BASE_FEATURE(kWebAuthCableExtensionAnywhere,
              "WebAuthenticationCableExtensionAnywhere",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // Enabled in M132. Remove in or after M135 or when the comparison histograms
@@ -58,7 +58,7 @@ BASE_FEATURE(kWebAuthnICloudKeychainForActiveWithDrive,
 // Not yet enabled by default.
 BASE_FEATURE(kWebAuthnICloudKeychainForActiveWithoutDrive,
              "WebAuthenticationICloudKeychainForActiveWithoutDrive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enabled in M118. Remove in or after M121.
 BASE_FEATURE(kWebAuthnICloudKeychainForInactiveWithDrive,
@@ -68,7 +68,7 @@ BASE_FEATURE(kWebAuthnICloudKeychainForInactiveWithDrive,
 // Not yet enabled by default.
 BASE_FEATURE(kWebAuthnICloudKeychainForInactiveWithoutDrive,
              "WebAuthenticationICloudKeychainForInactiveWithoutDrive",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Default enabled in M135. Remove in or after M138.
 COMPONENT_EXPORT(DEVICE_FIDO)
@@ -80,22 +80,22 @@ BASE_FEATURE(kWebAuthnRetryU2FErrors,
 // kWebAuthnEnclaveAuthenticator is enabled.
 BASE_FEATURE(kWebAuthnUseInsecureSoftwareUnexportableKeys,
              "WebAuthenticationUseInsecureSoftwareUnexportableKeys",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Development flag. Must not be enabled by default.
 BASE_FEATURE(kWebAuthnEnclaveAuthenticatorDelay,
              "WebAuthnEnclaveAuthenticatorDelay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Not yet enabled by default.
 BASE_FEATURE(kWebAuthnAmbientSignin,
              "WebAuthenticationAmbientSignin",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is a deprecation flag. Disabled in M136. Remove in or after M139.
 BASE_FEATURE(kWebAuthnHybridLinking,
              "WebAuthenticationHybridLinking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is a deprecation flag. It is now enabled by default, but we want to
 // disable it eventually.
@@ -109,7 +109,7 @@ BASE_FEATURE(kWebAuthnPublishPrelinkingInfo,
 // Disabled by default.
 BASE_FEATURE(kWebAuthnHelloSignal,
              "WebAuthenticationHelloSignal",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Default enabled in M132. Remove in or after M135.
 BASE_FEATURE(kWebAuthnSkipHybridConfigIfSystemSupported,
@@ -119,7 +119,7 @@ BASE_FEATURE(kWebAuthnSkipHybridConfigIfSystemSupported,
 // Disabled by default.
 BASE_FEATURE(kDigitalCredentialsHybridLinking,
              "DigitalCredentialsHybridLinking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Default enabled in M136. Remove in or after M139.
 BASE_FEATURE(kWebAuthnPasskeyUpgrade,
@@ -129,7 +129,7 @@ BASE_FEATURE(kWebAuthnPasskeyUpgrade,
 // Disabled by default.
 BASE_FEATURE(kWebAuthnEnclaveAttestation,
              "WebAuthenticationEnclaveAttestation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Default enabled in M134. Remove in or after M137.
 BASE_FEATURE(kWebAuthnNewBfCacheHandling,
@@ -159,6 +159,6 @@ BASE_FEATURE(kWebAuthnMicrosoftSoftwareUnexportableKeyProvider,
 // Not yet enabled by default.
 BASE_FEATURE(kWebAuthnSignalApiHidePasskeys,
              "WebAuthenticationSignalApiHidePasskeys",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace device
diff --git a/extensions/common/extension_features.cc b/extensions/common/extension_features.cc
index 649af6eb0972c..c5b1612fcf18a 100644
--- a/extensions/common/extension_features.cc
+++ b/extensions/common/extension_features.cc
@@ -26,7 +26,7 @@ BASE_FEATURE(kApiEnterpriseKioskInput,
 
 BASE_FEATURE(kApiRuntimeActionData,
              "ApiRuntimeActionData",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kApiPermissionsHostAccessRequests,
              "ApiPermissionsHostAccessRequests",
@@ -46,7 +46,7 @@ BASE_FEATURE(kApiOdfsConfigPrivate,
 
 BASE_FEATURE(kApiEnterpriseReportingPrivateOnDataMaskingRulesTriggered,
              "ApiEnterpriseReportingPrivateOnDataMaskingRulesTriggered",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 ///////////////////////////////////////////////////////////////////////////////
 // Other Features
@@ -56,7 +56,7 @@ BASE_FEATURE(kApiEnterpriseReportingPrivateOnDataMaskingRulesTriggered,
 
 BASE_FEATURE(kAllowWithholdingExtensionPermissionsOnInstall,
              "AllowWithholdingExtensionPermissionsOnInstall",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCheckingNoExtensionIdInExtensionIpcs,
              "EMF_NO_EXTENSION_ID_FOR_EXTENSION_SOURCE",
@@ -72,7 +72,7 @@ BASE_FEATURE(kExtensionDisableUnsupportedDeveloper,
 
 BASE_FEATURE(kExtensionIconVariants,
              "ExtensionIconVariants",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionManifestV2DeprecationWarning,
              "ExtensionManifestV2DeprecationWarning",
@@ -80,11 +80,11 @@ BASE_FEATURE(kExtensionManifestV2DeprecationWarning,
 
 BASE_FEATURE(kExtensionManifestV2Unsupported,
              "ExtensionManifestV2Unsupported",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionManifestV2ExceptionList,
              "ExtensionManifestV2ExceptionList",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionManifestV2Disabled,
              "ExtensionManifestV2Disabled",
@@ -97,7 +97,7 @@ const base::FeatureParam<std::string> kExtensionManifestV2ExceptionListParam(
 
 BASE_FEATURE(kAllowLegacyMV2Extensions,
              "AllowLegacyMV2Extensions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionSourceUrlEnforcement,
              "ExtensionSourceUrlEnforcement",
@@ -109,27 +109,27 @@ BASE_FEATURE(kExtensionWARForRedirect,
 
 BASE_FEATURE(kExtensionsManifestV3Only,
              "ExtensionsManifestV3Only",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionsMenuAccessControl,
              "ExtensionsMenuAccessControl",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionsMenuAccessControlWithPermittedSites,
              "ExtensionsMenuAccessControlWithPermittedSitesName",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionsToolbarZeroState,
              "ExtensionsToolbarZeroState",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kForceWebRequestProxyForTest,
              "ForceWebRequestProxyForTest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kLaunchWindowsNativeHostsDirectly,
              "LaunchWindowsNativeHostsDirectly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // To investigate signal beacon loss in crrev.com/c/2262402.
 BASE_FEATURE(kReportKeepaliveUkm,
@@ -138,7 +138,7 @@ BASE_FEATURE(kReportKeepaliveUkm,
 
 BASE_FEATURE(kSafeBrowsingCrxAllowlistAutoDisable,
              "SafeBrowsingCrxAllowlistAutoDisable",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSafeBrowsingCrxAllowlistShowWarnings,
              "SafeBrowsingCrxAllowlistShowWarnings",
@@ -146,11 +146,11 @@ BASE_FEATURE(kSafeBrowsingCrxAllowlistShowWarnings,
 
 BASE_FEATURE(kStructuredCloningForMV3Messaging,
              "StructuredCloningForMV3Messaging",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTelemetryExtensionPendingApprovalApi,
              "TelemetryExtensionPendingApprovalApi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/399447642): Clean up this feature after confirming the fix is
 // sufficient.
@@ -171,7 +171,7 @@ BASE_FEATURE(kDeclarativeNetRequestSafeRuleLimits,
 
 BASE_FEATURE(kExperimentalOmniboxLabs,
              "ExperimentalOmniboxLabs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDeclarativeNetRequestResponseHeaderMatching,
              "DeclarativeNetRequestResponseHeaderMatching",
@@ -183,15 +183,15 @@ BASE_FEATURE(kIncludeJSCallStackInExtensionApiRequest,
 
 BASE_FEATURE(kUseNewServiceWorkerTaskQueue,
              "UseNewServiceWorkerTaskQueue",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDeclarativeNetRequestHeaderSubstitution,
              "DeclarativeNetRequestHeaderSubstitution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSilentDebuggerExtensionAPI,
              "SilentDebuggerExtensionAPI",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kRemoveCoreSiteInstance,
              "RemoveCoreSiteInstance",
@@ -199,14 +199,14 @@ BASE_FEATURE(kRemoveCoreSiteInstance,
 
 BASE_FEATURE(kUserScriptUserExtensionToggle,
              "UserScriptUserExtensionToggle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDebuggerAPIRestrictedToDevMode,
              "DebuggerAPIRestrictedToDevMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExtensionBrowserNamespaceAlternative,
              "ExtensionBrowserNamespaceAlternative",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace extensions_features
diff --git a/gpu/config/gpu_finch_features.cc b/gpu/config/gpu_finch_features.cc
index b784eb9ff2c33..95167ce70eae7 100644
--- a/gpu/config/gpu_finch_features.cc
+++ b/gpu/config/gpu_finch_features.cc
@@ -49,13 +49,13 @@ bool IsDeviceBlocked(const char* field, const std::string& block_list) {
 // Used to limit GL version to 2.0 for skia raster and compositing.
 BASE_FEATURE(kUseGles2ForOopR,
              "UseGles2ForOopR",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // More aggressive behavior for the shader cache: increase size, and do not
 // purge as much in case of memory pressure.
 BASE_FEATURE(kAggressiveShaderCacheLimits,
              "AggressiveShaderCacheLimits",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 // Use android SurfaceControl API for managing display compositor's buffer queue
@@ -79,22 +79,22 @@ const base::FeatureParam<std::string> kAndroidSurfaceControlModelBlocklist{
 // Hardware Overlays for WebView.
 BASE_FEATURE(kWebViewSurfaceControl,
              "WebViewSurfaceControl",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kWebViewSurfaceControlForTV,
              "WebViewSurfaceControlForTV",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use thread-safe media path on WebView.
 BASE_FEATURE(kWebViewThreadSafeMedia,
              "WebViewThreadSafeMedia",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This is used as default state because it's different for webview and chrome.
 // WebView hardcodes this as enabled in AwMainDelegate.
 BASE_FEATURE(kWebViewThreadSafeMediaDefault,
              "WebViewThreadSafeMediaDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to limit AImageReader max queue size to 1 since many devices especially
 // android Tv devices do not support more than 1 images.
@@ -138,13 +138,13 @@ const base::FeatureParam<std::string>
 // drivers to pick most optimal layout.
 BASE_FEATURE(kUseHardwareBufferUsageFlagsFromVulkan,
              "UseHardwareBufferUsageFlagsFromVulkan",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Same as above (and depends on it) and allows using extra usage even if we use
 // USAGE_COMPOSER_OVERLAY.
 BASE_FEATURE(kAllowHardwareBufferUsageFlagsFromVulkanForScanout,
              "AllowHardwareBufferUsageFlagsFromVulkanForScanout",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #endif
 
@@ -158,19 +158,19 @@ BASE_FEATURE(kDefaultEnableGpuRasterization,
     BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_FUCHSIA) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Enables the use of MSAA in skia on Ice Lake and later intel architectures.
 BASE_FEATURE(kEnableMSAAOnNewIntelGPUs,
              "EnableMSAAOnNewIntelGPUs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kNoUndamagedOverlayPromotion,
              "NoUndamagedOverlayPromotion",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_IOS)
@@ -178,7 +178,7 @@ BASE_FEATURE(kNoUndamagedOverlayPromotion,
 // adjusted to match the one from the browser process every time it changes.
 BASE_FEATURE(kAdjustGpuProcessPriority,
              "AdjustGpuProcessPriority",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // When enabled, Grshader disk cache will be cleared on startup if any cache
@@ -186,7 +186,7 @@ BASE_FEATURE(kAdjustGpuProcessPriority,
 // various parameters like chrome version, driver version etc.
 BASE_FEATURE(kClearGrShaderDiskCacheOnInvalidPrefix,
              "ClearGrShaderDiskCacheOnInvalidPrefix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls the decode acceleration of JPEG images (as opposed to camera
 // captures) in Chrome OS using the VA-API.
@@ -194,7 +194,7 @@ BASE_FEATURE(kClearGrShaderDiskCacheOnInvalidPrefix,
 // https://crbug.com/868400 is resolved.
 BASE_FEATURE(kVaapiJpegImageDecodeAcceleration,
              "VaapiJpegImageDecodeAcceleration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls the decode acceleration of WebP images in Chrome OS using the
 // VA-API.
@@ -202,7 +202,7 @@ BASE_FEATURE(kVaapiJpegImageDecodeAcceleration,
 // https://crbug.com/877694 is resolved.
 BASE_FEATURE(kVaapiWebPImageDecodeAcceleration,
              "VaapiWebPImageDecodeAcceleration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable Vulkan graphics backend for compositing and rasterization. Defaults to
 // native implementation if --use-vulkan flag is not used. Otherwise
@@ -213,7 +213,7 @@ BASE_FEATURE(kVulkan,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -222,7 +222,7 @@ BASE_FEATURE(kEnableDrDc,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -232,7 +232,7 @@ BASE_FEATURE(kEnableDrDc,
     BUILDFLAG(IS_ANDROID)
 #define WEBGPU_ENABLED base::FEATURE_ENABLED_BY_DEFAULT
 #else
-#define WEBGPU_ENABLED base::FEATURE_DISABLED_BY_DEFAULT
+#define WEBGPU_ENABLED base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 BASE_FEATURE(kWebGPUService, "WebGPUService", WEBGPU_ENABLED);
 BASE_FEATURE(kWebGPUBlobCache, "WebGPUBlobCache", WEBGPU_ENABLED);
@@ -260,13 +260,13 @@ BASE_FEATURE(kWebGPUUseTintIR,
 #if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_MAC)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kWebGPUUseVulkanMemoryModel,
              "WebGPUUseVulkanMemoryModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 
@@ -336,7 +336,7 @@ BASE_FEATURE(kSkiaGraphite,
 #if BUILDFLAG(IS_MAC) && defined(ARCH_CPU_ARM64)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -347,14 +347,14 @@ BASE_FEATURE(kSkiaGraphite,
 // --disable-skia-graphite-precompilation.
 BASE_FEATURE(kSkiaGraphitePrecompilation,
              "SkiaGraphitePrecompilation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kConditionallySkipGpuChannelFlush,
              "ConditionallySkipGpuChannelFlush",
 // To enable on ChromeOS, test failures must be investigated
 // (crrev.com/c/5435673).
 #if BUILDFLAG(IS_CHROMEOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -378,7 +378,7 @@ const base::FeatureParam<bool> kSkiaGraphiteDawnBackendDebugLabels{
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kSkiaGraphiteDawnUseD3D12,
              "SkiaGraphiteDawnUseD3D12",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Enable persistent storage of VkPipelineCache data.
@@ -390,20 +390,20 @@ BASE_FEATURE(kEnableVkPipelineCache,
 // discardable memory.
 BASE_FEATURE(kNoDiscardableMemoryForGpuDecodePath,
              "NoDiscardableMemoryForGpuDecodePath",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use a 100-command limit before forcing context switch per command buffer
 // instead of 20.
 BASE_FEATURE(kIncreasedCmdBufferParseSlice,
              "IncreasedCmdBufferParseSlice",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Prune transfer cache entries not accessed recently. This also turns off
 // similar logic in cc::GpuImageDecodeCache which is the largest (often single)
 // client of transfer cache.
 BASE_FEATURE(kPruneOldTransferCacheEntries,
              "PruneOldTransferCacheEntries",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // On platforms with delegated compositing, try to release overlays later, when
 // no new frames are swapped.
@@ -423,7 +423,7 @@ BASE_FEATURE(kD3DBackingUploadWithUpdateSubresource,
 // restarting a gpu service.
 BASE_FEATURE(kHandleOverlaysSwapFailure,
              "HandleOverlaysSwapFailure",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature allows enabling specific entries in
 // software_rendering_list.json, via experimentation. The entries must have
@@ -431,7 +431,7 @@ BASE_FEATURE(kHandleOverlaysSwapFailure,
 // experiment for the entries that need to be enabled.
 BASE_FEATURE(kGPUBlockListTestGroup,
              "GPUBlockListTestGroup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kGPUBlockListTestGroupId{&kGPUBlockListTestGroup,
                                                        "test_group", 0};
 
@@ -441,7 +441,7 @@ const base::FeatureParam<int> kGPUBlockListTestGroupId{&kGPUBlockListTestGroup,
 // that need to be enabled.
 BASE_FEATURE(kGPUDriverBugListTestGroup,
              "GPUDriverBugListTestGroup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kGPUDriverBugListTestGroupId{
     &kGPUDriverBugListTestGroup, "test_group", 0};
 
@@ -839,7 +839,7 @@ bool IncreaseBufferCountForHighFrameRate() {
 // TODO(b/324276400): Work in progress.
 BASE_FEATURE(kSyncPointGraphValidation,
              "SyncPointGraphValidation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsSyncPointGraphValidationEnabled() {
   return base::FeatureList::IsEnabled(kSyncPointGraphValidation);
@@ -847,12 +847,12 @@ bool IsSyncPointGraphValidationEnabled() {
 
 BASE_FEATURE(kANGLEPerContextBlobCache,
              "ANGLEPerContextBlobCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_APPLE)
 BASE_FEATURE(kIOSurfaceMultiThreading,
              "IOSurfaceMultiThreading",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 }  // namespace features
diff --git a/gpu/ipc/client/command_buffer_proxy_impl.cc b/gpu/ipc/client/command_buffer_proxy_impl.cc
index d438d776aa830..0e2777a6f963b 100644
--- a/gpu/ipc/client/command_buffer_proxy_impl.cc
+++ b/gpu/ipc/client/command_buffer_proxy_impl.cc
@@ -143,6 +143,7 @@ ContextResult CommandBufferProxyImpl::Initialize(
 }
 
 void CommandBufferProxyImpl::OnDisconnect() {
+    LOG(ERROR) << "in CommandBufferProxyImpl::OnDisconnect !!! !!! zh1x1an :" << this;
   base::AutoLockMaybe lock(lock_.get());
   base::AutoLock last_state_lock(last_state_lock_);
 
@@ -797,6 +798,7 @@ void CommandBufferProxyImpl::LockAndDisconnectChannel() {
 }
 
 void CommandBufferProxyImpl::DisconnectChannel() {
+    LOG(ERROR) << "in CommandBufferProxyImpl::DisconnectChannel !!! !!! zh1x1an: " << this;
   CheckLock();
   // Prevent any further messages from being sent, and ensure we only call
   // the client for lost context a single time.
@@ -807,9 +809,13 @@ void CommandBufferProxyImpl::DisconnectChannel() {
 
   mojo::SyncCallRestrictions::ScopedAllowSyncCall allow_sync;
   channel_->GetGpuChannel().DestroyCommandBuffer(route_id_);
-
-  if (gpu_control_client_)
-    gpu_control_client_->OnGpuControlLostContext();
+    
+    LOG(ERROR) << "in CommandBufferProxyImpl::DisconnectChannel !!! !!! gpu_control_client_: " << gpu_control_client_ << " zh1x1an: " << this;
+    if (gpu_control_client_){
+        LOG(ERROR) << "in CommandBufferProxyImpl::DisconnectChannel ,,, before OnGpuControlLostContext ,,, ,,, zh1x1an: " << this;
+        gpu_control_client_->OnGpuControlLostContext();
+    }
+    
 }
 
 }  // namespace gpu
diff --git a/media/base/media_switches.cc b/media/base/media_switches.cc
index 450896c023758..2b9bbf365d0ef 100644
--- a/media/base/media_switches.cc
+++ b/media/base/media_switches.cc
@@ -310,7 +310,7 @@ BASE_FEATURE(kPictureInPictureOcclusionTracking,
 // Enables user control over muting tab audio from the tab strip.
 BASE_FEATURE(kEnableTabMuting,
              "EnableTabMuting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(ENABLE_PLATFORM_HEVC)
 // Enables HEVC hardware accelerated decoding.
@@ -340,7 +340,7 @@ BASE_FEATURE(kResumeBackgroundVideo,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -349,26 +349,26 @@ BASE_FEATURE(kResumeBackgroundVideo,
 // macOS 13.0+.
 BASE_FEATURE(kMacLoopbackAudioForScreenShare,
              "MacLoopbackAudioForScreenShare",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use the built-in MacOS screen-sharing picker (SCContentSharingPicker). This
 // flag will only use the built-in picker on MacOS 15 Sequoia and later where it
 // is required to avoid recurring permission dialogs.
 BASE_FEATURE(kUseSCContentSharingPicker,
              "UseSCContentSharingPicker",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_MAC)
 
 #if BUILDFLAG(IS_LINUX)
 // Enables system audio mirroring using pulseaudio.
 BASE_FEATURE(kPulseaudioLoopbackForCast,
              "PulseaudioLoopbackForCast",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables system audio sharing using pulseaudio.
 BASE_FEATURE(kPulseaudioLoopbackForScreenShare,
              "PulseaudioLoopbackForScreenShare",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_LINUX)
 
 // When enabled, MediaCapabilities will check with GPU Video Accelerator
@@ -397,7 +397,7 @@ BASE_FEATURE(kMediaCastOverlayButton,
 // that |kOverlayFullscreenVideo| is true, else it is ignored.
 BASE_FEATURE(kUseAndroidOverlayForSecureOnly,
              "UseAndroidOverlayForSecureOnly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows usage of OS-level (platform) audio encoders.
 BASE_FEATURE(kPlatformAudioEncoder,
@@ -405,7 +405,7 @@ BASE_FEATURE(kPlatformAudioEncoder,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -419,7 +419,7 @@ BASE_FEATURE(kCdmHostVerification,
 BASE_FEATURE(kContextMenuCopyVideoFrame,
              "ContextMenuCopyVideoFrame",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -429,7 +429,7 @@ BASE_FEATURE(kContextMenuCopyVideoFrame,
 BASE_FEATURE(kContextMenuSaveVideoFrameAs,
              "ContextMenuSaveVideoFrameAs",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -452,7 +452,7 @@ BASE_FEATURE(kChromeWideEchoCancellation,
 // Enforces the use of system echo cancellation.
 BASE_FEATURE(kEnforceSystemEchoCancellation,
              "EnforceSystemEchoCancellation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If `EnforceSystemEchoCancellation` is enabled and echo cancellation (AEC) is
 // requested, two additional parameters can be added: one for the AGC effect and
@@ -486,13 +486,13 @@ BASE_FEATURE(kCrOSSystemAECDeactivatedGroups,
              base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCrOSEnforceSystemAecNsAgc,
              "CrOSEnforceSystemAecNsAgc",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCrOSEnforceSystemAecNs,
              "CrOSEnforceSystemAecNs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCrOSEnforceSystemAecAgc,
              "CrOSEnforceSystemAecAgc",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kCrOSEnforceSystemAec,
              "CrOSEnforceSystemAec",
              base::FEATURE_ENABLED_BY_DEFAULT);
@@ -524,7 +524,7 @@ BASE_FEATURE(kShowForceRespectUiGainsToggle,
 
 BASE_FEATURE(kCrOSSystemVoiceIsolationOption,
              "CrOSSystemVoiceIsolationOption",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAudioFlexibleLoopbackForSystemLoopback,
              "AudioFlexibleLoopbackForSystemLoopback",
@@ -532,7 +532,7 @@ BASE_FEATURE(kAudioFlexibleLoopbackForSystemLoopback,
 
 BASE_FEATURE(kCrOSEnforceMonoAudioCapture,
              "CrOSEnforceMonoAudioCapture",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Make MSE garbage collection algorithm more aggressive when we are under
@@ -540,7 +540,7 @@ BASE_FEATURE(kCrOSEnforceMonoAudioCapture,
 // releasing stale data from MSE buffers.
 BASE_FEATURE(kMemoryPressureBasedSourceBufferGC,
              "MemoryPressureBasedSourceBufferGC",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the Mirroring Service will fetch, analyze, and store
 // information on the quality of the session using RTCP logs.
@@ -569,13 +569,13 @@ BASE_FEATURE(kRevokeMediaSourceObjectURLOnAttach,
 
 BASE_FEATURE(kD3D11VideoDecoderUseSharedHandle,
              "D3D11VideoDecoderUseSharedHandle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Runs the media service in the GPU process on a dedicated thread.
 BASE_FEATURE(kDedicatedMediaServiceThread,
              "DedicatedMediaServiceThread",
 #if BUILDFLAG(IS_WIN)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -589,7 +589,7 @@ BASE_FEATURE(kDeferAudioFocusUntilAudible,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -598,13 +598,13 @@ BASE_FEATURE(kDeferAudioFocusUntilAudible,
 // except for testing.
 BASE_FEATURE(kDocumentPictureInPictureNavigation,
              "DocumentPictureInPictureNavigation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID)
 
 // Adds an animation to document picture-in-picture resizes.
 BASE_FEATURE(kDocumentPictureInPictureAnimateResize,
              "DocumentPictureInPictureAnimateResize",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allows document picture-in-picture pages to request capture.
 BASE_FEATURE(kDocumentPictureInPictureCapture,
@@ -624,13 +624,13 @@ BASE_FEATURE(kFallbackAfterDecodeError,
 // outside of CrOS.
 BASE_FEATURE(kFeatureManagementLiveTranslateCrOS,
              "FeatureManagementLiveTranslateCrOS",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !BUILDFLAG(IS_ANDROID)
 // Blocks picture-in-picture windows while file dialogs are open.
 BASE_FEATURE(kFileDialogsBlockPictureInPicture,
              "FileDialogsBlockPictureInPicture",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID)
 
 // Show toolbar button that opens dialog for controlling media sessions.
@@ -639,7 +639,7 @@ BASE_FEATURE(kGlobalMediaControls,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -662,7 +662,7 @@ BASE_FEATURE(kMediaRemotingWithoutFullscreen,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 #endif
@@ -674,14 +674,14 @@ BASE_FEATURE(kGlobalMediaControlsPictureInPicture,
     BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Enable selection of audio output device in Global Media Controls.
 BASE_FEATURE(kGlobalMediaControlsSeamlessTransfer,
              "GlobalMediaControlsSeamlessTransfer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // CanPlayThrough issued according to standard.
 BASE_FEATURE(kSpecCompliantCanPlayThrough,
@@ -708,30 +708,30 @@ BASE_FEATURE(kAcceleratedVideoDecodeLinux,
 #if BUILDFLAG(USE_VAAPI)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kAcceleratedVideoDecodeLinuxGL,
              "AcceleratedVideoDecodeLinuxGL",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAcceleratedVideoEncodeLinux,
              "AcceleratedVideoEncoder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Ignore the non-intel driver blacklist for VaapiVideoDecoder implementations.
 // Intended for manual usage only in order to gague the status of newer driver
 // implementations.
 BASE_FEATURE(kVaapiIgnoreDriverChecks,
              "VaapiIgnoreDriverChecks",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_LINUX)
 
 // NVIDIA VA-API drivers do not support Chromium and can sometimes cause
 // crashes, disable VA-API on NVIDIA GPUs by default. See crbug.com/1492880.
 BASE_FEATURE(kVaapiOnNvidiaGPUs,
              "VaapiOnNvidiaGPUs",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable VA-API hardware low power encoder for all codecs on intel Gen9x gpu.
 BASE_FEATURE(kVaapiLowPowerEncoderGen9x,
@@ -743,7 +743,7 @@ BASE_FEATURE(kVaapiLowPowerEncoderGen9x,
 // enable by default once the ARC++ hw codecs issue is fixed.
 BASE_FEATURE(kVaapiEnforceVideoMinMaxResolution,
              "VaapiEnforceVideoMinMaxResolution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Ensure the advertised minimum supported resolution is larger than or equal to
 // a given one (likely QVGA + 1) for certain codecs/modes and platforms, for
@@ -771,7 +771,7 @@ BASE_FEATURE(kVaapiAV1Encoder,
 // calls for thread safe backends.
 BASE_FEATURE(kGlobalVaapiLock,
              "GlobalVaapiLock",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS)
 // Enable H264 temporal layer encoding with HW encoder on ChromeOS.
@@ -782,7 +782,7 @@ BASE_FEATURE(kVaapiH264TemporalLayerHWEncoding,
 // encoder on ChromeOS.
 BASE_FEATURE(kVaapiH264SWBitrateController,
              "VaapiH264SWBitrateController",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enable VP8 temporal layer encoding with HW encoder on ChromeOS.
 BASE_FEATURE(kVaapiVp8TemporalLayerHWEncoding,
              "VaapiVp8TemporalLayerEncoding",
@@ -798,13 +798,13 @@ BASE_FEATURE(kVaapiVp9SModeHWEncoding,
 // Enables VSync aligned MJPEG decoding.
 BASE_FEATURE(kVSyncMjpegDecoding,
              "VSyncMjpegDecoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // defined(ARCH_CPU_X86_FAMILY) && BUILDFLAG(IS_CHROMEOS)
 #if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_LINUX)
 // Enable H264 temporal layer encoding with V4L2 HW encoder on ChromeOS.
 BASE_FEATURE(kV4L2H264TemporalLayerHWEncoding,
              "V4L2H264TemporalLayerHWEncoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Inform video blitter of video color space.
@@ -815,17 +815,17 @@ BASE_FEATURE(kVideoBlitColorAccuracy,
 // Displays new video picture-in-picture controls for the 2024 UI update.
 BASE_FEATURE(kVideoPictureInPictureControlsUpdate2024,
              "VideoPictureInPictureControlsUpdate2024",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A video encoder is allowed to drop a frame in cast mirroring.
 BASE_FEATURE(kCastVideoEncoderFrameDrop,
              "CastVideoEncoderFrameDrop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A video encoder is allowed to drop a frame in WebCodecs.
 BASE_FEATURE(kWebCodecsVideoEncoderFrameDrop,
              "WebCodecsVideoEncoderFrameDrop",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A hardware video encoder is allowed to drop a frame in WebRTC.
 BASE_FEATURE(kWebRTCHardwareVideoEncoderFrameDrop,
@@ -836,14 +836,14 @@ BASE_FEATURE(kWebRTCHardwareVideoEncoderFrameDrop,
 // possible.
 BASE_FEATURE(kWebRTCColorAccuracy,
              "WebRTCColorAccuracy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables support for External Clear Key (ECK) key system for testing on
 // supported platforms. On platforms that do not support ECK, this feature has
 // no effect.
 BASE_FEATURE(kExternalClearKeyForTesting,
              "ExternalClearKeyForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 // Specifies the path to the MediaFoundation Clear Key CDM for testing.
@@ -854,13 +854,13 @@ const base::FeatureParam<std::string> kMediaFoundationClearKeyCdmPathForTesting{
 // purposes only.
 BASE_FEATURE(kEnableFaultyGPUForMediaFoundation,
              "EnableFaultyGPUForMediaFoundation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN)
 
 // Enables the On-Device Web Speech feature on supported devices.
 BASE_FEATURE(kOnDeviceWebSpeech,
              "OnDeviceWebSpeech",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the Live Caption feature on supported devices.
 BASE_FEATURE(kLiveCaption, "LiveCaption", base::FEATURE_ENABLED_BY_DEFAULT);
@@ -870,7 +870,7 @@ BASE_FEATURE(kLiveCaption, "LiveCaption", base::FEATURE_ENABLED_BY_DEFAULT);
 // SODA library.
 BASE_FEATURE(kLogSodaLoadFailures,
              "kLogSodaLoadFailures",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether a "Share this tab instead" button should be shown for
 // getDisplayMedia captures. Note: This flag does not control if the "Share this
@@ -894,7 +894,7 @@ BASE_FEATURE(kShareThisTabInsteadButtonGetDisplayMediaAudio,
 // the Speech On-Device API (SODA) detects a speaker change.
 BASE_FEATURE(kSpeakerChangeDetection,
              "SpeakerChangeDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Log the amount of flickering between partial results. This measures how often
 // the system revises earlier outputs, to quantify the system's output
@@ -904,7 +904,7 @@ BASE_FEATURE(kSpeakerChangeDetection,
 // the previous timestep.
 BASE_FEATURE(kLiveCaptionLogFlickerRate,
              "LiveCaptionLogFlickerRate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use a greedy text stabilizer to reduce flickering when translating partial
 // speech recognition results.
@@ -916,7 +916,7 @@ BASE_FEATURE(kLiveCaptionUseGreedyTextStabilizer,
 // recognition results.
 BASE_FEATURE(kLiveCaptionUseWaitK,
              "LiveCaptionUseWaitK",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Live Caption can be used in multiple languages, as opposed to just English.
 BASE_FEATURE(kLiveCaptionMultiLanguage,
@@ -926,17 +926,17 @@ BASE_FEATURE(kLiveCaptionMultiLanguage,
 // Enable experimental Live Caption languages.
 BASE_FEATURE(kLiveCaptionExperimentalLanguages,
              "LiveCaptionExperimentalLanguages",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable automatic downloading of speech recognition language packs.
 BASE_FEATURE(kLiveCaptionAutomaticLanguageDownload,
              "LiveCaptionAutomaticLanguageDownload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable or disable Live Caption from the right click menu.
 BASE_FEATURE(kLiveCaptionRightClick,
              "LiveCaptionRightClick",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable or disable Live Caption support for WebAudio.
 BASE_FEATURE(kLiveCaptionWebAudio,
@@ -952,7 +952,7 @@ BASE_FEATURE(kLiveTranslate, "LiveTranslate", base::FEATURE_ENABLED_BY_DEFAULT);
 // provisioning server.
 BASE_FEATURE(kFailUrlProvisionFetcherForTesting,
              "FailUrlProvisionFetcherForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables hardware secure decryption if supported by hardware and CDM.
 // TODO(xhwang): Currently this is only used for development of new features.
@@ -960,7 +960,7 @@ BASE_FEATURE(kFailUrlProvisionFetcherForTesting,
 // is already available.
 BASE_FEATURE(kHardwareSecureDecryption,
              "HardwareSecureDecryption",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // By default, a codec is not supported for hardware secure decryption if it
 // does not support clear lead. This option forces the support for testing.
@@ -1007,7 +1007,7 @@ BASE_FEATURE(kHardwareMediaKeyHandling,
     BUILDFLAG(USE_MPRIS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1018,7 +1018,7 @@ BASE_FEATURE(kResolutionBasedDecoderPriority,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1027,12 +1027,12 @@ BASE_FEATURE(kResolutionBasedDecoderPriority,
 // using camera or microphone).
 BASE_FEATURE(kAutoPictureInPictureForVideoPlayback,
              "AutoPictureInPictureForVideoPlayback",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether we should show a setting to disable autoplay policy.
 BASE_FEATURE(kAutoplayDisableSettings,
              "AutoplayDisableSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether we should allow color space changes to flush AcceleratedVideoDecoder.
 BASE_FEATURE(kAVDColorSpaceChanges,
@@ -1050,7 +1050,7 @@ BASE_FEATURE(kAllowNonSecureOverlays,
 // Enables block model (LinearBlock) on supported devices.
 BASE_FEATURE(kMediaCodecBlockModel,
              "MediaCodecBlockModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allow FrameInfoHelper to guess coded size information for MediaCodec frames.
 BASE_FEATURE(kMediaCodecCodedSizeGuessing,
@@ -1107,7 +1107,7 @@ BASE_FEATURE(kRequestSystemAudioFocus,
 // needed, except for some Android TV devices.
 BASE_FEATURE(kUseAudioLatencyFromHAL,
              "UseAudioLatencyFromHAL",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Specify the required security level for MediaDrm when checking the MediaDrm
 // version.
@@ -1121,7 +1121,7 @@ BASE_FEATURE(kUseSecurityLevelWhenCheckingMediaDrmVersion,
 // decoders, e.g. Cast on ATV.
 BASE_FEATURE(kAllowMediaCodecSoftwareDecoder,
              "AllowMediaCodecSoftwareDecoder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature allows for some MediaDrm functions to be executed in a separate
 // process so that crashes do not bring down the browser. Flag is available so
@@ -1138,13 +1138,13 @@ BASE_FEATURE(kBuiltInHlsPlayer,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kBuiltInHlsMP4,
              "BuiltInHlsMP4",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kMediaPlayerHlsStatistics,
              "MediaPlayerHlsStatistics",
@@ -1164,7 +1164,7 @@ BASE_FEATURE(kChromeOSHWVBREncoding,
 #if defined(ARCH_CPU_X86_FAMILY)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1176,7 +1176,7 @@ BASE_FEATURE(kLimitConcurrentDecoderInstances,
 // Use SequencedTaskRunner for VideoEncodeAccelerator
 BASE_FEATURE(kUSeSequencedTaskRunnerForVEA,
              "UseSequencedTaskRunnerForVEA",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if defined(ARCH_CPU_ARM_FAMILY)
 // Experimental support for GL based scaling for NV12 on Trogdor.
@@ -1193,7 +1193,7 @@ BASE_FEATURE(kUseGLForScaling,
 // frames. This flag enables an experimental GL-based conversion method.
 BASE_FEATURE(kPreferGLImageProcessor,
              "PreferGLImageProcessor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Experimental support for software based MT21 conversion. On some (older)
 // architectures, the hardware video decoder outputs frames in a pixel format
 // known as MT21. Normally a hardware block performs to the conversion between
@@ -1201,7 +1201,7 @@ BASE_FEATURE(kPreferGLImageProcessor,
 // instead.
 BASE_FEATURE(kPreferSoftwareMT21,
              "PreferSoftwareMT21",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Enable populating the |needs_detiling| field in |VideoFrameMetadata|. This in
 // turn triggers Skia to use the |VulkanImageProcessor| for detiling protected
 // content.
@@ -1241,7 +1241,7 @@ BASE_FEATURE(kDirectShowGetPhotoState,
 // Windows.
 BASE_FEATURE(kIncludeIRCamerasInDeviceEnumeration,
              "IncludeIRCamerasInDeviceEnumeration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables software rate controller encoding acceleration for Windows.
 BASE_FEATURE(kMediaFoundationUseSoftwareRateCtrl,
@@ -1263,18 +1263,18 @@ BASE_FEATURE(kMediaFoundationD3D11VideoCapture,
 // Enable zero-copy based on MediaFoundation video capture with D3D11.
 BASE_FEATURE(kMediaFoundationD3D11VideoCaptureZeroCopy,
              "MediaFoundationD3D11VideoCaptureZeroCopy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the use of MediaFoundationRenderer for clear content on supported
 // systems.
 BASE_FEATURE(kMediaFoundationClearPlayback,
              "MediaFoundationClearPlayback",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable VP9 kSVC decoding with HW decoder for webrtc use case on Windows.
 BASE_FEATURE(kD3D11Vp9kSVCHWDecoding,
              "D3D11Vp9kSVCHWDecoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The Media Foundation Rendering Strategy determines which presentation mode
 // Media Foundation Renderer should use for presenting clear content. This
@@ -1313,7 +1313,7 @@ const base::FeatureParam<MediaFoundationClearRenderingStrategy>
 
 BASE_FEATURE(kMediaFoundationBatchRead,
              "MediaFoundationBatchRead",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kBatchReadCount{&kMediaFoundationBatchRead,
                                               "batch_read_count", 1};
@@ -1328,7 +1328,7 @@ BASE_FEATURE(kPlatformEncryptedDolbyVision,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1341,14 +1341,14 @@ BASE_FEATURE(kPlatformEncryptedDolbyVision,
 // Vision is allowed.
 BASE_FEATURE(kAllowClearDolbyVisionInMseWhenPlatformEncryptedDvEnabled,
              "AllowClearDolbyVisionInMseWhenPlatformEncryptedDvEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_CHROMEOS)
 // Enables the new media player features.
 BASE_FEATURE(kBackgroundListening,
              "BackgroundListening",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_CHROMEOS)
 
 #if BUILDFLAG(ALLOW_OOP_VIDEO_DECODER)
@@ -1361,7 +1361,7 @@ BASE_FEATURE(kUseOutOfProcessVideoDecoding,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 #endif  // BUILDFLAG(ALLOW_OOP_VIDEO_DECODER)
@@ -1371,13 +1371,13 @@ BASE_FEATURE(kUseOutOfProcessVideoDecoding,
 // using the GPU process.
 BASE_FEATURE(kUseOutOfProcessVideoEncoding,
              "UseOutOfProcessVideoEncoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
 
 // Use SequencedTaskRunner for MediaService.
 BASE_FEATURE(kUseSequencedTaskRunnerForMediaService,
              "UseSequencedTaskRunnerForMediaService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // SequencedTaskRunner isn't supported on Windows since the accelerator requires
 // a COM STA TaskRunner.
@@ -1388,7 +1388,7 @@ BASE_FEATURE(kUseSequencedTaskRunnerForMojoVEAProvider,
 #if BUILDFLAG(IS_APPLE)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 #endif  // !BUILDFLAG(IS_WIN)
@@ -1400,7 +1400,7 @@ BASE_FEATURE(kUseTaskRunnerForMojoVEAService,
 #if BUILDFLAG(IS_APPLE) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1417,7 +1417,7 @@ BASE_FEATURE(kUseTaskRunnerForMojoVEAService,
 //   for thread safety.
 BASE_FEATURE(kUseTaskRunnerForMojoAudioDecoderService,
              "UseTaskRunnerForMojoAudioDecoderService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 std::string GetEffectiveAutoplayPolicy(const base::CommandLine& command_line) {
   // Return the autoplay policy set in the command line, if any.
@@ -1454,7 +1454,7 @@ BASE_FEATURE(kRecordWebAudioEngagement,
 // non-low latency scenarios.
 BASE_FEATURE(kReduceHardwareVideoDecoderBuffers,
              "ReduceHardwareVideoDecoderBuffers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // The following Media Engagement flags are not enabled on mobile platforms:
@@ -1467,7 +1467,7 @@ BASE_FEATURE(kReduceHardwareVideoDecoderBuffers,
 BASE_FEATURE(kMediaEngagementBypassAutoplayPolicies,
              "MediaEngagementBypassAutoplayPolicies",
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -1475,7 +1475,7 @@ BASE_FEATURE(kMediaEngagementBypassAutoplayPolicies,
 BASE_FEATURE(kPreloadMediaEngagementData,
              "PreloadMediaEngagementData",
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_IOS)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -1483,36 +1483,36 @@ BASE_FEATURE(kPreloadMediaEngagementData,
 
 BASE_FEATURE(kMediaEngagementHTTPSOnly,
              "MediaEngagementHTTPSOnly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables experimental local learning for media. Used in the context of media
 // capabilities only. Adds reporting only; does not change media behavior.
 BASE_FEATURE(kMediaLearningExperiment,
              "MediaLearningExperiment",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the general purpose media machine learning framework. Adds reporting
 // only; does not change media behavior.
 BASE_FEATURE(kMediaLearningFramework,
              "MediaLearningFramework",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the smoothness prediction experiment.  Requires
 // kMediaLearningFramework to be enabled also, else it does nothing.
 BASE_FEATURE(kMediaLearningSmoothnessExperiment,
              "MediaLearningSmoothnessExperiment",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable the prototype global optimization of tuneables via finch.  See
 // media/base/tuneable.h for how to create tuneable parameters.
 BASE_FEATURE(kMediaOptimizer,
              "JointMediaOptimizer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable aggregate power measurement for media playback.
 BASE_FEATURE(kMediaPowerExperiment,
              "MediaPowerExperiment",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !BUILDFLAG(IS_ANDROID)
 // Enables audio ducking.
@@ -1537,7 +1537,7 @@ BASE_FEATURE(kAudioFocusDuckFlash,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1554,19 +1554,19 @@ BASE_FEATURE(kInternalMediaSession,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kUseFakeDeviceForMediaStream,
              "use-fake-device-for-media-stream",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS) && !BUILDFLAG(IS_FUCHSIA)
 // Enables effects for camera and mic streams.
 BASE_FEATURE(kCameraMicEffects,
              "CameraMicEffects",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS) &&
         // !BUILDFLAG(IS_FUCHSIA)
 
@@ -1577,22 +1577,22 @@ BASE_FEATURE(kCameraMicEffects,
 // TODO(crbug.com/40246079): hardware AV1 encoding should be added.
 BASE_FEATURE(kCastStreamingAv1,
              "CastStreamingAv1",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether the new exponential bitrate calculate logic is used, or
 // the legacy linear algorithm.
 BASE_FEATURE(kCastStreamingExponentialVideoBitrateAlgorithm,
              "CastStreamingExponentialVideoBitrateAlgorithm",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // TODO(crbug.com/282984511): Remove after M151.
 BASE_FEATURE(kCastStreamingMediaVideoEncoder,
              "CastStreamingMediaVideoEncoder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCastStreamingPerformanceOverlay,
              "CastStreamingPerformanceOverlay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether mirroring negotiations will include the VP9 codec for video
 // encoding.
@@ -1610,7 +1610,7 @@ BASE_FEATURE(kCastStreamingVp8,
 // TODO(https://crbug.com/1311770): hardware VP9 encoding should be added.
 BASE_FEATURE(kCastStreamingVp9,
              "CastStreamingVp9",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_MAC)
 // Controls whether hardware H264 is default enabled on macOS.
@@ -1623,14 +1623,14 @@ BASE_FEATURE(kCastStreamingMacHardwareH264,
 // Controls whether hardware H264 is default enabled on Windows.
 BASE_FEATURE(kCastStreamingWinHardwareH264,
              "CastStreamingWinHardwareH264",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 #if BUILDFLAG(IS_FUCHSIA)
 // Enables use of Fuchsia's Mediacodec service for encoding.
 BASE_FEATURE(kFuchsiaMediacodecVideoEncoder,
              "FuchsiaMediacodecVideoEncoder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_FUCHSIA)
 
 // Controls whether to pre-dispatch more decode tasks when pending decodes is
@@ -1648,7 +1648,7 @@ BASE_FEATURE(kUseWindowBoundsForPip,
 
 #if BUILDFLAG(IS_WIN)
 // Enables audio offload when supported by endpoints.
-BASE_FEATURE(kAudioOffload, "AudioOffload", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kAudioOffload, "AudioOffload", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The buffer time in milliseconds for audio offload.
 const base::FeatureParam<double> kAudioOffloadBufferTimeMs{
@@ -1664,7 +1664,7 @@ BASE_FEATURE(kMediaLogToConsole,
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -1679,14 +1679,14 @@ BASE_FEATURE(kLibaomUseChromeThreads,
 // Controls whether to use D3D12 video decoder instead of D3D11 when supported.
 BASE_FEATURE(kD3D12VideoDecoder,
              "D3D12VideoDecoder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether to enable D3D12 video encode accelerator.
 // Owner: zhibo1.wang@intel.com
 // Expiry: When enabled by default.
 BASE_FEATURE(kD3D12VideoEncodeAccelerator,
              "D3D12VideoEncodeAccelerator",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_WIN)
 
 #if BUILDFLAG(IS_WIN) && defined(ARCH_CPU_ARM64)
@@ -1699,10 +1699,10 @@ BASE_FEATURE(kMediaFoundationAcceleratedEncodeOnArm64,
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kMediaFoundationD3DVideoProcessing,
              "MediaFoundationD3DVideoProcessing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kMediaFoundationSharedImageEncode,
              "MediaFoundationSharedImageEncode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Controls whether muted media stream audio should continue to render.
diff --git a/media/webrtc/webrtc_features.cc b/media/webrtc/webrtc_features.cc
index 897e5de5253ee..055ad1c2438e4 100644
--- a/media/webrtc/webrtc_features.cc
+++ b/media/webrtc/webrtc_features.cc
@@ -15,7 +15,7 @@ namespace features {
 // Windows.Graphics.Capture API based screen capturer, if it is available.
 BASE_FEATURE(kWebRtcAllowWgcScreenCapturer,
              "AllowWgcScreenCapturer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled we will tell WebRTC that we want to use the
 // Windows.Graphics.Capture API based window capturer, if it is available.
@@ -31,7 +31,7 @@ BASE_FEATURE(kWebRtcAllowWgcWindowCapturer,
 // This flag only has an effect if kWebRtcAllowWgcScreenCapturer is enabled.
 BASE_FEATURE(kWebRtcAllowWgcScreenZeroHz,
              "AllowWgcScreenZeroHz",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // This flag only has an effect if kWebRtcAllowWgcWindowCapturer is enabled.
 BASE_FEATURE(kWebRtcAllowWgcWindowZeroHz,
              "AllowWgcWindowZeroHz",
@@ -49,7 +49,7 @@ BASE_FEATURE(kWebRtcAllowInputVolumeAdjustment,
 // needed).
 BASE_FEATURE(kWebRtcApmDownmixCaptureAudioMethod,
              "WebRtcApmDownmixCaptureAudioMethod",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the Audio Processing Module is used to determine whether the
 // playout reference is needed. Otherwise the decision is based on
@@ -76,21 +76,21 @@ BASE_FEATURE(kWebRtcAllowH265Receive,
 // accelerator reports support of encoding in L1T2.
 BASE_FEATURE(kWebRtcH265L1T2,
              "WebRtcH265L1T2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, allows H.265 L1T3 to be used for sending WebRTC streams, if the
 // accelerator reports support of encoding in L1T3. If this is enabled, L1T2 is
 // also implied to be enabled.
 BASE_FEATURE(kWebRtcH265L1T3,
              "WebRtcH265L1T3",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, allows AV1 HW encoding to be used for WebRTC streams, if the
 // platform accelerator supports encoding of AV1.
 BASE_FEATURE(kWebRtcAV1HWEncode,
              "WebRtcAV1HWEncode",
 #if BUILDFLAG(IS_WIN)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_WIN)
@@ -102,7 +102,7 @@ BASE_FEATURE(kWebRtcAV1HWEncode,
 // processing on Android.
 BASE_FEATURE(kWebRtcApm48kHzSampleRateOnAndroidKillSwitch,
              "WebRtcApm48kHzSampleRateOnAndroidKillSwitch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 }  // namespace features
diff --git a/mojo/core/embedder/features.cc b/mojo/core/embedder/features.cc
index 3909ef55a7401..6fd6540399db7 100644
--- a/mojo/core/embedder/features.cc
+++ b/mojo/core/embedder/features.cc
@@ -14,7 +14,7 @@ namespace core {
 #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kMojoLinuxChannelSharedMem,
              "MojoLinuxChannelSharedMem",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kMojoLinuxChannelSharedMemPages{
     &kMojoLinuxChannelSharedMem, "MojoLinuxChannelSharedMemPages", 4};
 const base::FeatureParam<bool> kMojoLinuxChannelSharedMemEfdZeroOnWake{
@@ -25,17 +25,17 @@ const base::FeatureParam<bool> kMojoLinuxChannelSharedMemEfdZeroOnWake{
 
 BASE_FEATURE(kMojoPosixUseWritev,
              "MojoPosixUseWritev",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_NACL) &&
         // !BUILDFLAG(MOJO_USE_APPLE_CHANNEL)
 
 BASE_FEATURE(kMojoInlineMessagePayloads,
              "MojoInlineMessagePayloads",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(MOJO_SUPPORT_LEGACY_CORE)
 #if BUILDFLAG(IS_CHROMEOS)
-BASE_FEATURE(kMojoIpcz, "MojoIpcz", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kMojoIpcz, "MojoIpcz", base::FEATURE_ENABLED_BY_DEFAULT);
 #else
 BASE_FEATURE(kMojoIpcz, "MojoIpcz", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
@@ -43,12 +43,12 @@ BASE_FEATURE(kMojoIpcz, "MojoIpcz", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kMojoIpczMemV2,
              "MojoIpczMemV2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kMojoUseBinder,
              "MojoUseBinder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 }  // namespace core
diff --git a/net/base/features.cc b/net/base/features.cc
index dbe2c99cc73ec..ec9d5817ff1de 100644
--- a/net/base/features.cc
+++ b/net/base/features.cc
@@ -17,11 +17,11 @@ BASE_FEATURE(kAlpsForHttp2, "AlpsForHttp2", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAvoidH2Reprioritization,
              "AvoidH2Reprioritization",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCapReferrerToOriginOnCrossOrigin,
              "CapReferrerToOriginOnCrossOrigin",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAsyncDns,
              "AsyncDns",
@@ -29,13 +29,13 @@ BASE_FEATURE(kAsyncDns,
     BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kDnsTransactionDynamicTimeouts,
              "DnsTransactionDynamicTimeouts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<double> kDnsTransactionTimeoutMultiplier{
     &kDnsTransactionDynamicTimeouts, "DnsTransactionTimeoutMultiplier", 7.5};
@@ -79,11 +79,11 @@ BASE_FEATURE(kUseDnsHttpsSvcbAlpn,
 
 BASE_FEATURE(kUseHostResolverCache,
              "UseHostResolverCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHappyEyeballsV3,
              "HappyEyeballsV3",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kAlternativePortForGloballyReachableCheck{
     &kUseAlternativePortForGloballyReachableCheck,
@@ -91,19 +91,19 @@ const base::FeatureParam<int> kAlternativePortForGloballyReachableCheck{
 
 BASE_FEATURE(kUseAlternativePortForGloballyReachableCheck,
              "UseAlternativePortForGloballyReachableCheck",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableIPv6ReachabilityOverride,
              "EnableIPv6ReachabilityOverride",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableTLS13EarlyData,
              "EnableTLS13EarlyData",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNetworkQualityEstimator,
              "NetworkQualityEstimator",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<int> kRecentHTTPThresholdInSeconds{
     &kNetworkQualityEstimator, "RecentHTTPThresholdInSeconds", -1};
@@ -122,11 +122,11 @@ const base::FeatureParam<base::TimeDelta>
 
 BASE_FEATURE(kSplitCacheByIncludeCredentials,
              "SplitCacheByIncludeCredentials",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSplitCacheByNetworkIsolationKey,
              "SplitCacheByNetworkIsolationKey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Note: Use of this feature is gated on the HTTP cache itself being
 // partitioned, which is controlled by the kSplitCacheByNetworkIsolationKey
@@ -137,11 +137,11 @@ BASE_FEATURE(kSplitCacheByCrossSiteMainFrameNavigationBoolean,
 
 BASE_FEATURE(kSplitCodeCacheByNetworkIsolationKey,
              "SplitCodeCacheByNetworkIsolationKey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPartitionConnectionsByNetworkIsolationKey,
              "PartitionConnectionsByNetworkIsolationKey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPostQuantumKyber,
              "PostQuantumKyber",
@@ -151,15 +151,15 @@ BASE_FEATURE(kUseMLKEM, "UseMLKEM", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSearchEnginePreconnectInterval,
              "SearchEnginePreconnectInterval",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kShortLaxAllowUnsafeThreshold,
              "ShortLaxAllowUnsafeThreshold",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSameSiteDefaultChecksMethodRigorously,
              "SameSiteDefaultChecksMethodRigorously",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSchemefulSameSite,
              "SchemefulSameSite",
@@ -176,7 +176,7 @@ extern const base::FeatureParam<int> kLimitOpenUDPSocketsMax(
 
 BASE_FEATURE(kTimeoutTcpConnectAttempt,
              "TimeoutTcpConnectAttempt",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 extern const base::FeatureParam<double> kTimeoutTcpConnectAttemptRTTMultiplier(
     &kTimeoutTcpConnectAttempt,
@@ -195,7 +195,7 @@ extern const base::FeatureParam<base::TimeDelta> kTimeoutTcpConnectAttemptMax(
 
 BASE_FEATURE(kCookieSameSiteConsidersRedirectChain,
              "CookieSameSiteConsidersRedirectChain",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAllowSameSiteNoneCookiesInSandbox,
              "AllowSameSiteNoneCookiesInSandbox",
@@ -203,7 +203,7 @@ BASE_FEATURE(kAllowSameSiteNoneCookiesInSandbox,
 
 BASE_FEATURE(kWaitForFirstPartySetsInit,
              "WaitForFirstPartySetsInit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls the maximum time duration an outermost frame navigation should be
 // deferred by RWS initialization.
@@ -215,11 +215,11 @@ extern const base::FeatureParam<base::TimeDelta>
 
 BASE_FEATURE(kRequestStorageAccessNoCorsRequired,
              "RequestStorageAccessNoCorsRequired",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kStorageAccessApiFollowsSameOriginPolicy,
              "StorageAccessApiFollowsSameOriginPolicy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kStaticKeyPinningEnforcement,
              "StaticKeyPinningEnforcement",
@@ -227,7 +227,7 @@ BASE_FEATURE(kStaticKeyPinningEnforcement,
 
 BASE_FEATURE(kCookieDomainRejectNonASCII,
              "CookieDomainRejectNonASCII",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables partitioning of third party storage (IndexedDB, CacheStorage, etc.)
 // by the top level site to reduce fingerprinting.
@@ -263,30 +263,30 @@ BASE_FEATURE(kAlpsClientHintParsing,
 
 BASE_FEATURE(kShouldKillSessionOnAcceptChMalformed,
              "ShouldKillSessionOnAcceptChMalformed",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableWebsocketsOverHttp3,
              "EnableWebsocketsOverHttp3",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 // Disabled because of https://crbug.com/1489696.
 BASE_FEATURE(kEnableGetNetworkConnectivityHintAPI,
              "EnableGetNetworkConnectivityHintAPI",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableTcpPortRandomization,
              "EnableTcpPortRandomization",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTcpSocketIoCompletionPortWin,
              "TcpSocketIoCompletionPortWin",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kAvoidEntryCreationForNoStore,
              "AvoidEntryCreationForNoStore",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<int> kAvoidEntryCreationForNoStoreCacheSize{
     &kAvoidEntryCreationForNoStore, "AvoidEntryCreationForNoStoreCacheSize",
     1000};
@@ -312,7 +312,7 @@ BASE_FEATURE(kAsyncQuicSession,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // A flag to make multiport context creation asynchronous.
@@ -321,13 +321,13 @@ BASE_FEATURE(kAsyncMultiPortPath,
 #if !BUILDFLAG(CRONET_BUILD) && (BUILDFLAG(IS_WIN) || BUILDFLAG(IS_ANDROID))
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // IP protection experiment configuration settings
 BASE_FEATURE(kEnableIpProtectionProxy,
              "EnableIpPrivacyProxy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<std::string> kIpPrivacyTokenServer{
     &kEnableIpProtectionProxy, /*name=*/"IpPrivacyTokenServer",
@@ -482,7 +482,7 @@ inline constexpr auto kMigrateSessionsOnNetworkChangeV2Default =
     base::FEATURE_ENABLED_BY_DEFAULT;
 #else   // !BUILDFLAG(IS_ANDROID)
 inline constexpr auto kMigrateSessionsOnNetworkChangeV2Default =
-    base::FEATURE_DISABLED_BY_DEFAULT;
+    base::FEATURE_ENABLED_BY_DEFAULT;
 #endif  // BUILDFLAG(IS_ANDROID)
 BASE_FEATURE(kMigrateSessionsOnNetworkChangeV2,
              "MigrateSessionsOnNetworkChangeV2",
@@ -490,7 +490,7 @@ BASE_FEATURE(kMigrateSessionsOnNetworkChangeV2,
 
 BASE_FEATURE(kDisableBlackholeOnNoNewNetwork,
              "DisableBlackHoleOnNoNewNetwork",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_LINUX)
 BASE_FEATURE(kAddressTrackerLinuxIsProxied,
@@ -501,36 +501,36 @@ BASE_FEATURE(kAddressTrackerLinuxIsProxied,
 // Enables binding of cookies to the port that originally set them by default.
 BASE_FEATURE(kEnablePortBoundCookies,
              "EnablePortBoundCookies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables binding of cookies to the scheme that originally set them.
 NET_EXPORT BASE_DECLARE_FEATURE(kEnableSchemeBoundCookies);
 BASE_FEATURE(kEnableSchemeBoundCookies,
              "EnableSchemeBoundCookies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Disallows cookies to have non ascii values in their name or value.
 NET_EXPORT BASE_DECLARE_FEATURE(kDisallowNonAsciiCookies);
 BASE_FEATURE(kDisallowNonAsciiCookies,
              "DisallowNonAsciiCookies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kTimeLimitedInsecureCookies,
              "TimeLimitedInsecureCookies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable third-party cookie blocking from the command line.
 BASE_FEATURE(kForceThirdPartyCookieBlocking,
              "ForceThirdPartyCookieBlockingEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableEarlyHintsOnHttp11,
              "EnableEarlyHintsOnHttp11",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEnableWebTransportDraft07,
              "EnableWebTransportDraft07",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, partitioned storage will be allowed even if third-party cookies
 // are disabled by default. Partitioned storage will not be allowed if
@@ -541,7 +541,7 @@ BASE_FEATURE(kThirdPartyPartitionedStorageAllowedByDefault,
 
 BASE_FEATURE(kSpdyHeadersToHttpResponseUseBuilder,
              "SpdyHeadersToHttpResponseUseBuilder",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kReportEcn, "ReportEcn", base::FEATURE_ENABLED_BY_DEFAULT);
 
@@ -565,10 +565,10 @@ BASE_FEATURE(kReduceIPAddressChangeNotification,
 
 BASE_FEATURE(kDeviceBoundSessions,
              "DeviceBoundSessions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kPersistDeviceBoundSessions,
              "PersistDeviceBoundSessions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(bool,
                    kDeviceBoundSessionsForceEnableForTesting,
                    &kDeviceBoundSessions,
@@ -600,7 +600,7 @@ BASE_FEATURE(kCompressionDictionaryTransportRequireKnownRootCert,
 
 BASE_FEATURE(kReportingApiEnableEnterpriseCookieIssues,
              "ReportingApiEnableEnterpriseCookieIssues",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOptimizeParsingDataUrls,
              "OptimizeParsingDataUrls",
@@ -608,7 +608,7 @@ BASE_FEATURE(kOptimizeParsingDataUrls,
 
 BASE_FEATURE(kSimdutfBase64Support,
              "SimdutfBase64Support",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFurtherOptimizeParsingDataUrls,
              "FurtherOptimizeParsingDataUrls",
@@ -638,7 +638,7 @@ BASE_FEATURE(kEnableStaticCTAPIEnforcement,
 
 BASE_FEATURE(kDiskCacheBackendExperiment,
              "DiskCacheBackendExperiment",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 constexpr base::FeatureParam<DiskCacheBackend>::Option
     kDiskCacheBackendOptions[] = {
         {DiskCacheBackend::kSimple, "simple"},
@@ -677,11 +677,11 @@ BASE_FEATURE(kNewClientCertPathBuilding,
 
 BASE_FEATURE(kHstsTopLevelNavigationsOnly,
              "HstsTopLevelNavigationsOnly",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHttpCacheNoVarySearch,
              "HttpCacheNoVarySearch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(size_t,
                    kHttpCacheNoVarySearchCacheMaxEntries,
@@ -701,10 +701,10 @@ BASE_FEATURE(kUseCertTransparencyAwareApiForOsCertVerify,
 
 BASE_FEATURE(kSelfSignedLocalNetworkInterstitial,
              "SelfSignedLocalNetworkInterstitial",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(CHROME_ROOT_STORE_SUPPORTED)
-BASE_FEATURE(kVerifyQWACs, "VerifyQWACs", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kVerifyQWACs, "VerifyQWACs", base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(CHROME_ROOT_STORE_SUPPORTED)
 
 }  // namespace net::features
diff --git a/services/network/public/cpp/features.cc b/services/network/public/cpp/features.cc
index e7ceab89b25e4..9786b9db7b3c3 100644
--- a/services/network/public/cpp/features.cc
+++ b/services/network/public/cpp/features.cc
@@ -22,7 +22,7 @@ namespace network::features {
 // performance with a dedicated site.
 BASE_FEATURE(kBlockAcceptClientHints,
              "BlockAcceptClientHints",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string> kBlockAcceptClientHintsBlockedSite{
     &kBlockAcceptClientHints, /*name=*/"BlockedSite", /*default_value=*/""};
 
@@ -76,7 +76,7 @@ BASE_FEATURE(kPauseBrowserInitiatedHeavyTrafficForP2P,
 // network contention with high priority requests that may arrive soon.
 BASE_FEATURE(kProactivelyThrottleLowPriorityRequests,
              "ProactivelyThrottleLowPriorityRequests",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables Cross-Origin Opener Policy (COOP).
 // https://gist.github.com/annevk/6f2dd8c79c77123f39797f6bdac43f3e
@@ -90,7 +90,7 @@ BASE_FEATURE(kCrossOriginOpenerPolicy,
 // https://github.com/mikewest/coop-by-default/
 BASE_FEATURE(kCrossOriginOpenerPolicyByDefault,
              "CrossOriginOpenerPolicyByDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the "noopener-allow-popups" COOP value, which lets a document to
 // severe its opener relationship with the document that opened it.
@@ -106,7 +106,7 @@ BASE_FEATURE(kCoopNoopenerAllowPopups,
 // any production code. See https://crbug.com/1221127.
 BASE_FEATURE(kCoopRestrictProperties,
              "CoopRestrictProperties",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the origin trial for COOP: restrict-properties. We need a new feature
 // because token validation is not possible in the network process. This also
@@ -119,7 +119,7 @@ BASE_FEATURE(kCoopRestrictPropertiesOriginTrial,
 // HttpAuthCache.
 BASE_FEATURE(kSplitAuthCacheByNetworkIsolationKey,
              "SplitAuthCacheByNetworkIsolationKey",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable usage of hardcoded DoH upgrade mapping for use in automatic mode.
 BASE_FEATURE(kDnsOverHttpsUpgrade,
@@ -128,7 +128,7 @@ BASE_FEATURE(kDnsOverHttpsUpgrade,
     BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -137,7 +137,7 @@ BASE_FEATURE(kDnsOverHttpsUpgrade,
 // client's IP.
 BASE_FEATURE(kMaskedDomainList,
              "MaskedDomainList",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to build the MDL component's installer attributes and possibly control
 // which release version is retrieved.
@@ -161,7 +161,7 @@ BASE_FEATURE_PARAM(bool,
 // `UrlMatcherWithBypass` implementation.
 BASE_FEATURE(kMaskedDomainListFlatbufferImpl,
              "MaskedDomainListFlatbufferImpl",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If this feature is enabled, the mDNS responder service responds to queries
 // for TXT records associated with
@@ -169,14 +169,14 @@ BASE_FEATURE(kMaskedDomainListFlatbufferImpl,
 // mDNS names (random UUIDs) in the TXT record data.
 BASE_FEATURE(kMdnsResponderGeneratedNameListing,
              "MdnsResponderGeneratedNameListing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Treat ORB blocked responses to script-initiated fetches as errors too.
 // Complements ORB v0.2, which exempts script-initiated fetches.
 // Implementing ORB in Chromium is tracked in https://crbug.com/1178928
 BASE_FEATURE(kOpaqueResponseBlockingErrorsForAllFetches,
              "OpaqueResponseBlockingErrorsForAllFetches",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable support for ACCEPT_CH H2/3 frame as part of Client Hint Reliability.
 // See:
@@ -186,24 +186,24 @@ BASE_FEATURE(kAcceptCHFrame, "AcceptCHFrame", base::FEATURE_ENABLED_BY_DEFAULT);
 // https://fetch.spec.whatwg.org/#cors-non-wildcard-request-header-name
 BASE_FEATURE(kCorsNonWildcardRequestHeadersSupport,
              "CorsNonWildcardRequestHeadersSupport",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Do not send TLS client certificates in CORS preflight. Omit all client certs
 // and continue the handshake without sending one if requested.
 BASE_FEATURE(kOmitCorsClientCert,
              "OmitCorsClientCert",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Load Pervasive Payloads List for Cache Transparency.
 BASE_FEATURE(kPervasivePayloadsList,
              "PervasivePayloadsList",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables support for the `Variants` response header and reduce
 // accept-language. https://github.com/Tanych/accept-language
 BASE_FEATURE(kReduceAcceptLanguage,
              "ReduceAcceptLanguage",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kReduceAcceptLanguageCacheDuration,
@@ -215,7 +215,7 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 // Accept-Language HTTP header only.
 BASE_FEATURE(kReduceAcceptLanguageHTTP,
              "ReduceAcceptLanguageHTTP",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Reduce PNA preflight response waiting time to 200ms.
 // See: https://wicg.github.io/private-network-access/#cors-preflight
@@ -240,7 +240,7 @@ BASE_FEATURE(kPrivateNetworkAccessPermissionPrompt,
 // https://github.com/explainers-by-googlers/local-network-access
 BASE_FEATURE(kLocalNetworkAccessChecks,
              "LocalNetworkAccessChecks",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If true, local network access checks will only be warnings.
 BASE_FEATURE_PARAM(bool,
@@ -254,7 +254,7 @@ BASE_FEATURE_PARAM(bool,
 // value of this header.
 BASE_FEATURE(kCookieIndicesHeader,
              "CookieIndicesHeader",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the backend of the compression dictionary transport feature.
 // When this feature is enabled, the following will happen:
@@ -295,17 +295,17 @@ BASE_FEATURE(kSharedDictionaryRegisterNavigationRequests,
 // network requests if the binary has not yet been preloaded.
 BASE_FEATURE(kPreloadedDictionaryConditionalUse,
              "PreloadedDictionaryConditionalUse",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the `require-sri-for` CSP directive, which enables developers to
 // ensure all their external scripts have their integrity enforced.
 BASE_FEATURE(kCSPRequireSRIFor,
              "CSPRequireSRIFor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kVisibilityAwareResourceScheduler,
              "VisibilityAwareResourceScheduler",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSharedZstd, "SharedZstd", base::FEATURE_ENABLED_BY_DEFAULT);
 
@@ -321,7 +321,7 @@ BASE_FEATURE(kReduceTransferSizeUpdatedIPC,
 // https://docs.google.com/document/d/1LwgPlrtQtUhGz_ilTsRun-7o4TuHo9jbXll6FRq-dKk/edit?usp=sharing
 BASE_FEATURE(kRendererSideContentDecoding,
              "RendererSideContentDecoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // When non-zero, a Mojo data pipe of this size will be used between the
 // decoding thread and the data receiving thread.
 BASE_FEATURE_PARAM(int,
@@ -336,7 +336,7 @@ BASE_FEATURE_PARAM(int,
 // 3PC mitigations would otherwise allow the access.
 BASE_FEATURE(kSkipTpcdMitigationsForAds,
              "SkipTpcdMitigationsForAds",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Controls whether we ignore opener heuristic grants for 3PC accesses.
 BASE_FEATURE_PARAM(bool,
                    kSkipTpcdMitigationsForAdsHeuristics,
@@ -371,13 +371,13 @@ BASE_FEATURE(kAvoidResourceRequestCopies,
 // https://github.com/explainers-by-googlers/document-isolation-policy
 BASE_FEATURE(kDocumentIsolationPolicy,
              "DocumentIsolationPolicy",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature enables the Prefetch() method on the NetworkContext, and makes
 // the PrefetchMatchingURLLoaderFactory check the match quality.
 BASE_FEATURE(kNetworkContextPrefetch,
              "NetworkContextPrefetch",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature makes the matching fetches performed by the Prefetch() actually
 // be consumed directly by renderers. When this is disabled, the disk cache
@@ -385,14 +385,14 @@ BASE_FEATURE(kNetworkContextPrefetch,
 // unless "NetworkContextPrefetch" is also enabled.
 BASE_FEATURE(kNetworkContextPrefetchUseMatches,
              "NetworkContextPrefetchUseMatches",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // This feature enables treating 0.0.0.0/8 as the public address space instead
 // of private or local. This is a killswitch for a tightening of a loophole in
 // Private Network Access. See https://crbug.com/40058874.
 BASE_FEATURE(kTreatNullIPAsPublicAddressSpace,
              "TreatNullIPAsPublicAddressSpace",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, the CORS URL loader will clone the DevTools connection for a
 // resource request only if the request includes a DevTools request id.
@@ -406,28 +406,28 @@ BASE_FEATURE(kStorageAccessHeaders,
 
 BASE_FEATURE(kSRIMessageSignatureEnforcement,
              "SRIMessageSignatureEnforcement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCreateURLLoaderPipeAsync,
              "CreateURLLoaderPipeAsync",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAdAuctionEventRegistration,
              "AdAuctionEventRegistration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // See https://github.com/WICG/turtledove/blob/main/FLEDGE.md
 // Changes default Permissions Policy for features join-ad-interest-group and
 // run-ad-auction to a more restricted EnableForSelf.
 BASE_FEATURE(kAdInterestGroupAPIRestrictedPolicyByDefault,
              "AdInterestGroupAPIRestrictedPolicyByDefault",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables unload handler deprecation via Permissions-Policy.
 // https://crbug.com/1324111
 BASE_FEATURE(kDeprecateUnload,
              "DeprecateUnload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // If < 100, each user experiences the deprecation on this % of origins.
 // Which origins varies per user.
 BASE_FEATURE_PARAM(int,
@@ -447,7 +447,7 @@ BASE_FEATURE_PARAM(int,
 // if the host is on the allow-list.
 BASE_FEATURE(kDeprecateUnloadByAllowList,
              "DeprecateUnloadByAllowList",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // A list of hosts for which deprecation of unload is allowed. If it's empty
 // the all hosts are allowed.
 BASE_FEATURE_PARAM(std::string,
@@ -459,7 +459,7 @@ BASE_FEATURE_PARAM(std::string,
 // outgoing requests.
 BASE_FEATURE(kFrameAncestorHeaders,
              "FrameAncestorHeaders",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kUpdateRequestForCorsRedirect,
              "UpdateRequestForCorsRedirect",
@@ -547,7 +547,7 @@ BASE_FEATURE_PARAM(bool,
 // https://wicg.github.io/shared-storage/#batch-update
 BASE_FEATURE(kSharedStorageTransactionalBatchUpdate,
              "SharedStorageTransactionalBatchUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for the Interest Group API, i.e. if disabled, the
 // API exposure will be disabled regardless of the OT config.
@@ -583,10 +583,10 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kGetCookiesOnSet,
              "GetCookiesOnSet",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPopulatePermissionsPolicyOnRequest,
              "PopulatePermissionsPolicyOnRequest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace network::features
diff --git a/third_party/blink/common/features.cc b/third_party/blink/common/features.cc
index 5533944b46e9c..c386ef30c220d 100644
--- a/third_party/blink/common/features.cc
+++ b/third_party/blink/common/features.cc
@@ -49,7 +49,7 @@ BASE_FEATURE(kAdjustCanCreateCanvas2dResourceProvider,
 // Avoids copying ResourceRequest::TrustedParams when possible.
 BASE_FEATURE(kAvoidTrustedParamsCopies,
              "AvoidTrustedParamsCopies",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Block all MIDI access with the MIDI_SYSEX permission
 BASE_FEATURE(kBlockMidiByDefault,
@@ -62,7 +62,7 @@ BASE_FEATURE(kComputePressureRateObfuscationMitigation,
 
 BASE_FEATURE(kLowerHighResolutionTimerThreshold,
              "LowerHighResolutionTimerThreshold",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAllowDatapipeDrainedAsBytesConsumerInBFCache,
              "AllowDatapipeDrainedAsBytesConsumerInBFCache",
@@ -84,7 +84,7 @@ BASE_FEATURE(kAllowURNsInIframes,
 // warning for now.
 BASE_FEATURE(kDisplayWarningDeprecateURNIframesUseFencedFrames,
              "DisplayWarningDeprecateURNIframesUseFencedFrames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kAndroidExtendedKeyboardShortcuts,
              "AndroidExtendedKeyboardShortcuts",
@@ -126,12 +126,12 @@ BASE_FEATURE(kAutofillFixFieldsAssociatedWithNestedFormsByParser,
 // contain the "Unidentified" key.
 BASE_FEATURE(kAutofillSendUnidentifiedKeyAfterFill,
              "AutofillSendUnidentifiedKeyAfterFill",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // https://crbug.com/1472970
 BASE_FEATURE(kAutoSpeculationRules,
              "AutoSpeculationRules",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(bool,
                    kAutoSpeculationRulesHoldback,
                    &kAutoSpeculationRules,
@@ -153,7 +153,7 @@ BASE_FEATURE(kBFCacheOpenBroadcastChannel,
 
 BASE_FEATURE(kBackForwardCacheDWCOnJavaScriptExecution,
              "BackForwardCacheDWCOnJavaScriptExecution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable background resource fetch in Blink. See https://crbug.com/1379780 for
 // more details.
@@ -180,13 +180,13 @@ BASE_FEATURE_PARAM(bool,
 // https://crbug.com/1508329
 BASE_FEATURE(kBakedGamutMapping,
              "BakedGamutMapping",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to configure a per-origin allowlist of performance.mark events that are
 // permitted to be included in slow reports traces. See crbug.com/1181774.
 BASE_FEATURE(kBackgroundTracingPerformanceMark,
              "BackgroundTracingPerformanceMark",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(std::string,
                    kBackgroundTracingPerformanceMark_AllowList,
                    &kBackgroundTracingPerformanceMark,
@@ -242,7 +242,7 @@ BASE_FEATURE(kBoostNonRenderBlockingStyleLoadingTaskPriority,
 // calculation. This is useful for developers to test in local environment.
 BASE_FEATURE(kBrowsingTopicsBypassIPIsPubliclyRoutableCheck,
              "BrowsingTopicsBypassIPIsPubliclyRoutableCheck",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables calling the Topics API through Javascript (i.e.
 // document.browsingTopics()). For this feature to take effect, the main Topics
@@ -405,7 +405,7 @@ BASE_FEATURE_PARAM(bool,
 // must be enabled via the blink runtime feature mechanism, however.
 BASE_FEATURE(kCacheStorageCodeCacheHintHeader,
              "CacheStorageCodeCacheHintHeader",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(std::string,
                    kCacheStorageCodeCacheHintHeaderName,
                    &kCacheStorageCodeCacheHintHeader,
@@ -416,7 +416,7 @@ BASE_FEATURE_PARAM(std::string,
 // Enables camera preview in permission bubble and site settings.
 BASE_FEATURE(kCameraMicPreview,
              "CameraMicPreview",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Temporarily disabled due to issues:
@@ -425,23 +425,23 @@ BASE_FEATURE(kCameraMicPreview,
 // See https://g-issues.chromium.org/issues/328755781
 BASE_FEATURE(kCanvas2DHibernation,
              "Canvas2DHibernation",
-             base::FeatureState::FEATURE_DISABLED_BY_DEFAULT);
+             base::FeatureState::FEATURE_ENABLED_BY_DEFAULT);
 
 // When hibernating, make sure that the just-used transfer memory (to transfer
 // the snapshot) is freed.
 BASE_FEATURE(kCanvas2DHibernationReleaseTransferMemory,
              "Canvas2DHibernationReleaseTransferMemory",
-             base::FeatureState::FEATURE_DISABLED_BY_DEFAULT);
+             base::FeatureState::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether to capture the source location of JavaScript execution, which is one
 // of the renderer eviction reasons for Back/Forward Cache.
 BASE_FEATURE(kCaptureJSExecutionLocation,
              "CaptureJSExecutionLocation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kCheckHTMLParserBudgetLessOften,
              "CheckHTMLParserBudgetLessOften",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable legacy `dpr` client hint.
 BASE_FEATURE(kClientHintsDPR_DEPRECATED,
@@ -461,7 +461,7 @@ BASE_FEATURE(kClientHintsResourceWidth_DEPRECATED,
 // Enable `form-factor` client hint for XR devices.
 BASE_FEATURE(kClientHintsXRFormFactor,
              "ClientHintsXRFormFactor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable legacy `viewport-width` client hint.
 BASE_FEATURE(kClientHintsViewportWidth_DEPRECATED,
@@ -515,7 +515,7 @@ BASE_FEATURE(kCorrectFloatExtensionTestForWebGL,
 // and renders the image as encoded.
 BASE_FEATURE(kCreateImageBitmapOrientationNone,
              "CreateImageBitmapOrientationNone",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDeferRendererTasksAfterInput,
              "DeferRendererTasksAfterInput",
@@ -554,7 +554,7 @@ BASE_FEATURE_ENUM_PARAM(TaskDeferralPolicy,
 
 BASE_FEATURE(kDelayAsyncScriptExecution,
              "DelayAsyncScriptExecution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<DelayAsyncScriptDelayType>::Option
     delay_async_script_execution_delay_types[] = {
@@ -674,7 +674,7 @@ BASE_FEATURE_PARAM(bool,
 
 BASE_FEATURE(kDelayLayerTreeViewDeletionOnLocalSwap,
              "DelayLayerTreeViewDeletionOnLocalSwap",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kDelayLayerTreeViewDeletionOnLocalSwapTaskDelayParam,
@@ -687,24 +687,24 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 // See http://crbug.com/124534.
 BASE_FEATURE(kDevToolsImprovedNetworkError,
              "DevToolsImprovedNetworkError",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDirectCompositorThreadIpc,
              "DirectCompositorThreadIpc",
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kDisableArrayBufferSizeLimitsForTesting,
              "DisableArrayBufferSizeLimitsForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDiscardInputEventsToRecentlyMovedFrames,
              "DiscardInputEventsToRecentlyMovedFrames",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDisableThirdPartyStoragePartitioning3DeprecationTrial,
              "DisableThirdPartyStoragePartitioning3DeprecationTrial",
@@ -714,7 +714,7 @@ BASE_FEATURE(kDisableThirdPartyStoragePartitioning3DeprecationTrial,
 // signal that the renderer has sent a frame to cc (https://crbug.com/40057499).
 BASE_FEATURE(kDropInputEventsWhilePaintHolding,
              "DropInputEventsWhilePaintHolding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEstablishGpuChannelAsync,
              "EstablishGpuChannelAsync",
@@ -723,7 +723,7 @@ BASE_FEATURE(kEstablishGpuChannelAsync,
 #else
              // TODO(crbug.com/1278147): Experiment with this more on desktop to
              // see if it can help.
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -731,7 +731,7 @@ BASE_FEATURE(kEstablishGpuChannelAsync,
 // invisible pages.
 BASE_FEATURE(kEnableLazyLoadImageForInvisiblePage,
              "EnableLazyLoadImageForInvisiblePage",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<EnableLazyLoadImageForInvisiblePageType>::Option
     enable_lazy_load_image_for_invisible_page_types[] = {
         {EnableLazyLoadImageForInvisiblePageType::kAllInvisiblePage,
@@ -750,11 +750,11 @@ BASE_FEATURE_ENUM_PARAM(
 // window's top-level site.
 BASE_FEATURE(kEnforceNoopenerOnBlobURLNavigation,
              "EnforceNoopenerOnBlobURLNavigation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kEventTimingIgnorePresentationTimeFromUnexpectedFrameSource,
              "EventTimingIgnorePresentationTimeFromUnexpectedFrameSource",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kExemptSpeculationRulesHeaderFromCSP,
              "ExemptSpeculationRulesHeaderFromCSP",
@@ -812,13 +812,13 @@ BASE_FEATURE(kFencedFramesAutomaticBeaconCredentials,
 
 BASE_FEATURE(kFencedFramesCrossOriginAutomaticBeaconData,
              "FencedFramesCrossOriginAutomaticBeaconData",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls functionality related to network revocation/local unpartitioned
 // data access in fenced frames.
 BASE_FEATURE(kFencedFramesLocalUnpartitionedDataAccess,
              "FencedFramesLocalUnpartitionedDataAccess",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFencedFramesReportEventHeaderChanges,
              "FencedFramesReportEventHeaderChanges",
@@ -835,7 +835,7 @@ BASE_FEATURE(kFencedFramesSrcPermissionsPolicy,
 // network revocation to facilitate testing.
 BASE_FEATURE(kExemptUrlFromNetworkRevocationForTesting,
              "ExemptUrlFromNetworkRevocationForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use "style" and "json" destinations for CSS and JSON modules.
 // https://crbug.com/1491336
@@ -846,11 +846,11 @@ BASE_FEATURE(kFetchDestinationJsonCssModules,
 // File handling icons. https://crbug.com/1218213
 BASE_FEATURE(kFileHandlingIcons,
              "FileHandlingIcons",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFileSystemUrlNavigation,
              "FileSystemUrlNavigation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFileSystemUrlNavigationForChromeAppsOnly,
              "FileSystemUrlNavigationForChromeAppsOnly",
@@ -863,7 +863,7 @@ BASE_FEATURE(kFilteringScrollPrediction,
 #else
              // TODO(b/284271126): Run the experiment on desktop and enable if
              // positive.
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 BASE_FEATURE_PARAM(std::string,
@@ -905,15 +905,15 @@ BASE_FEATURE_PARAM(std::string,
 // See in the header.
 BASE_FEATURE(kFledgeConsiderKAnonymity,
              "FledgeConsiderKAnonymity",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kFledgeEnforceKAnonymity,
              "FledgeEnforceKAnonymity",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // See the header for more details.
 BASE_FEATURE(kFledgeLimitSelectableBuyerAndSellerReportingIds,
              "FledgeLimitSelectableBuyerAndSellerReportingIds",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(int,
                    kFledgeSelectableBuyerAndSellerReportingIdsSoftLimit,
                    &kFledgeLimitSelectableBuyerAndSellerReportingIds,
@@ -941,7 +941,7 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 
 BASE_FEATURE(kFledgeEnableSampleDebugReportOnCookieSetting,
              "FledgeEnableSampleDebugReportOnCookieSetting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFledgeSampleDebugReports,
              "FledgeSampleDebugReports",
@@ -1014,24 +1014,24 @@ BASE_FEATURE_PARAM(int,
 // privateAggregation.contributeToHistogramOnEvent.
 BASE_FEATURE(kFledgeEnforcePermissionPolicyContributeOnEvent,
              "FledgeEnforcePermissionPolicyContributeOnEvent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kFledgeDisableLocalAdsAuctions,
              "FledgeDisableLocalAdsAuctions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kForceHighPerformanceGPUForWebGL,
              "ForceHighPerformanceGPUForWebGL",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kForceInOrderScript,
              "ForceInOrderScript",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Automatically convert light-themed pages to use a Blink-generated dark theme
 BASE_FEATURE(kForceWebContentsDarkMode,
              "WebContentsForceDark",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Which algorithm should be used for color inversion?
 const base::FeatureParam<ForceDarkInversionMethod>::Option
@@ -1119,7 +1119,7 @@ BASE_FEATURE(kGMSCoreEmoji, "GMSCoreEmoji", base::FEATURE_ENABLED_BY_DEFAULT);
 // Defers device selection until after permission is granted.
 BASE_FEATURE(kGetUserMediaDeferredDeviceSettingsSelection,
              "GetUserMediaDeferredDeviceSettingsSelection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 BASE_FEATURE(kHiddenSelectionBounds,
@@ -1132,7 +1132,7 @@ BASE_FEATURE(kIgnoreInputWhileHidden,
 
 BASE_FEATURE(kImageLoadingPrioritizationFix,
              "ImageLoadingPrioritizationFix",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kIndexedDBCompressValuesWithSnappy,
              "IndexedDBCompressValuesWithSnappy",
@@ -1145,11 +1145,11 @@ constexpr base::FeatureParam<int>
 
 BASE_FEATURE(kInputPredictorTypeChoice,
              "InputPredictorTypeChoice",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kInputScenarioPriorityBoost,
              "InputScenarioPriorityBoost",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<bool> kInputScenarioPriorityBoostIncludesLoading{
     &features::kInputScenarioPriorityBoost,
@@ -1186,7 +1186,7 @@ const char kIntensiveWakeUpThrottling_GracePeriodSeconds_Name[] =
 
 BASE_FEATURE(kInteractiveDetectorIgnoreFcp,
              "InteractiveDetectorIgnoreFcp",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allow process isolation of iframes with the 'sandbox' attribute set. Whether
 // or not such an iframe will be isolated may depend on options specified with
@@ -1220,11 +1220,11 @@ BASE_FEATURE(kIsPaintableChecksResourceProviderInsteadOfBridge,
 
 BASE_FEATURE(kKalmanDirectionCutOff,
              "KalmanDirectionCutOff",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kKalmanHeuristics,
              "KalmanHeuristics",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kKeepAliveInBrowserMigration,
              "KeepAliveInBrowserMigration",
@@ -1232,7 +1232,7 @@ BASE_FEATURE(kKeepAliveInBrowserMigration,
 
 BASE_FEATURE(kAttributionReportingInBrowserMigration,
              "AttributionReportingInBrowserMigration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kLimitLayerMergeDistance,
              "LimitLayerMergeDistance",
@@ -1245,7 +1245,7 @@ BASE_FEATURE_PARAM(size_t,
 
 BASE_FEATURE(kLCPCriticalPathPredictor,
              "LCPCriticalPathPredictor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(bool,
                    kLCPCriticalPathAdjustImageLoadPriority,
@@ -1323,7 +1323,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLCPScriptObserver,
              "LCPScriptObserver",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_ENUM_PARAM(LcppResourceLoadPriority,
                         kLCPScriptObserverScriptLoadPriority,
@@ -1371,11 +1371,11 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLCPTimingPredictorPrerender2,
              "LCPTimingPredictorPrerender2",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kLCPPAutoPreconnectLcpOrigin,
              "LCPPAutoPreconnectLcpOrigin",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(double,
                    kLCPPAutoPreconnectFrequencyThreshold,
@@ -1403,7 +1403,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLCPPDeferUnusedPreload,
              "LCPPDeferUnusedPreload",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<LcppDeferUnusedPreloadExcludedResourceType>::Option
     lcpp_defer_unused_preload_excluded_resource_type[] = {
@@ -1472,7 +1472,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLCPPFontURLPredictor,
              "LCPPFontURLPredictor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(size_t,
                    kLCPPFontURLPredictorMaxUrlLength,
@@ -1575,7 +1575,7 @@ BASE_FEATURE_ENUM_PARAM(LcppPreloadLazyLoadImageType,
 
 BASE_FEATURE(kPreloadSystemFonts,
              "PreloadSystemFonts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const base::FeatureParam<std::string> kPreloadSystemFontsTargets{
     &kPreloadSystemFonts, "preload_system_fonts_targets", "[]"};
@@ -1623,11 +1623,11 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLCPPPrefetchSubresource,
              "LCPPPrefetchSubresource",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kHttpDiskCachePrewarming,
              "HttpDiskCachePrewarming",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(size_t,
                    kHttpDiskCachePrewarmingMaxUrlLength,
@@ -1687,7 +1687,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kLegacyParsingOfXContentTypeOptions,
              "LegacyParsingOfXContentTypeOptions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // A feature to reduce the set of resources fetched by No-State Prefetch.
 BASE_FEATURE(kLightweightNoStatePrefetch,
@@ -1695,11 +1695,11 @@ BASE_FEATURE(kLightweightNoStatePrefetch,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
-BASE_FEATURE(kLinkPreview, "LinkPreview", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kLinkPreview, "LinkPreview", base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<LinkPreviewTriggerType>::Option
     link_preview_trigger_type_options[] = {
@@ -1717,7 +1717,7 @@ BASE_FEATURE_ENUM_PARAM(LinkPreviewTriggerType,
 // First Meaningful Paint by a configurable buffer.
 BASE_FEATURE(kLoadingPhaseBufferTimeAfterFirstMeaningfulPaint,
              "LoadingPhaseBufferTimeAfterFirstMeaningfulPaint",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Makes network loading tasks unfreezable so that they can be processed while
 // the page is frozen.
@@ -1737,7 +1737,7 @@ BASE_FEATURE(kLowLatencyCanvas2dImageChromium,
 #if BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
 );
 
@@ -1749,13 +1749,13 @@ BASE_FEATURE(kLowLatencyWebGLImageChromium,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kLowPriorityAsyncScriptExecution,
              "LowPriorityAsyncScriptExecution",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kTimeoutForLowPriorityAsyncScriptExecution,
@@ -1871,7 +1871,7 @@ BASE_FEATURE(kMemoryCacheStrongReference,
              "MemoryCacheStrongReference",
 // Finch study showed no improvement on Android for strong memory cache.
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -1890,7 +1890,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kMemorySaverModeRenderTuning,
              "MemorySaverModeRenderTuning",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(int,
                    kAvailableMemoryThresholdParamMb,
                    &kMemorySaverModeRenderTuning,
@@ -1899,7 +1899,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kMHTML_Improvements,
              "MHTML_Improvements",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Used to control the collection of anchor element metrics (crbug.com/856683).
 // If kNavigationPredictor is enabled, then metrics of anchor elements
@@ -1929,21 +1929,21 @@ BASE_FEATURE(kNavigationPredictorNewViewportFeatures,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 BASE_FEATURE(kNoForcedFrameUpdatesForWebTests,
              "NoForcedFrameUpdatesForWebTests",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNoThrottlingVisibleAgent,
              "NoThrottlingVisibleAgent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kNoThrowForCSPBlockedWorker,
              "NoThrowForCSPBlockedWorker",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kOpenAllUrlsOrFilesOnDrop,
              "OpenAllUrlsOrFilesOnDrop",
@@ -1983,13 +1983,13 @@ BASE_FEATURE_PARAM(bool,
 // <link url, top-level site, frame origin>
 BASE_FEATURE(kPartitionVisitedLinkDatabase,
              "PartitionVisitedLinkDatabase",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the use of the PaintCache for Path2D objects that are rasterized
 // out of process.  Has no effect when kCanvasOopRasterization is disabled.
 BASE_FEATURE(kPath2DPaintCache,
              "Path2DPaintCache",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable browser-initiated dedicated worker script loading
 // (PlzDedicatedWorker). https://crbug.com/906991
@@ -1999,7 +1999,7 @@ BASE_FEATURE(kPlzDedicatedWorker,
 
 BASE_FEATURE(kDedicatedWorkerAblationStudyEnabled,
              "DedicatedWorkerAblationStudyEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(int,
                    kDedicatedWorkerStartDelayInMs,
@@ -2013,7 +2013,7 @@ BASE_FEATURE(kUseAncestorRenderFrameForWorker,
 
 BASE_FEATURE(kPrecompileInlineScripts,
              "PrecompileInlineScripts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Whether we should composite a PLSA (paint layer scrollable area) even if it
 // means losing lcd text.
@@ -2024,7 +2024,7 @@ BASE_FEATURE(kPreferCompositingToLCDText,
 #if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -2032,7 +2032,7 @@ BASE_FEATURE(kPreferCompositingToLCDText,
 BASE_FEATURE(kPrefetchFontLookupTables,
              "PrefetchFontLookupTables",
 #if BUILDFLAG(IS_WIN)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -2043,11 +2043,11 @@ BASE_FEATURE(kPrefetchFontLookupTables,
 // crbug.com/988956.
 BASE_FEATURE(kPrefetchPrivacyChanges,
              "PrefetchPrivacyChanges",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPreloadingHeuristicsMLModel,
              "PreloadingHeuristicsMLModel",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(int,
                    kPreloadingModelTimerStartDelay,
                    &kPreloadingHeuristicsMLModel,
@@ -2083,7 +2083,7 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kPreloadingViewportHeuristics,
              "PreloadingViewportHeuristics",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Firing pagehide events for intended prerender cancellation. See
 // crbug.com/353628449 for more details.
@@ -2107,7 +2107,7 @@ const char kPrerender2MemoryAcceptablePercentOfSystemMemoryParamName[] =
 
 BASE_FEATURE(kPrerender2EarlyDocumentLifecycleUpdate,
              "Prerender2EarlyDocumentLifecycleUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPrerender2WarmUpCompositor,
              "Prerender2WarmUpCompositor",
@@ -2132,7 +2132,7 @@ BASE_FEATURE_ENUM_PARAM(Prerender2WarmUpCompositorTriggerPoint,
 // Enable limiting previews loading hints to specific resource types.
 BASE_FEATURE(kPreviewsResourceLoadingHintsSpecificResourceTypes,
              "PreviewsResourceLoadingHintsSpecificResourceTypes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kPrewarmDefaultFontFamilies,
@@ -2215,7 +2215,7 @@ BASE_FEATURE(kPrivateAggregationApiProtectedAudienceAdditionalExtensions,
 
 BASE_FEATURE(kProcessHtmlDataImmediately,
              "ProcessHtmlDataImmediately",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(bool,
                    kProcessHtmlDataImmediatelyChildFrame,
@@ -2256,7 +2256,7 @@ BASE_FEATURE_PARAM(double,
                    0.005);
 BASE_FEATURE(kForceProduceCompileHints,
              "ForceProduceCompileHints",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kConsumeCompileHints,
              "ConsumeCompileHints",
@@ -2315,7 +2315,7 @@ BASE_FEATURE(kRenderSizeInScoreAdBrowserSignals,
 
 BASE_FEATURE(kResamplingInputEvents,
              "ResamplingInputEvents",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kResamplingScrollEvents,
              "ResamplingScrollEvents",
@@ -2323,7 +2323,7 @@ BASE_FEATURE(kResamplingScrollEvents,
 
 BASE_FEATURE(kResourceFetcherStoresStrongReferences,
              "ResourceFetcherStoresStrongReferences",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // https://html.spec.whatwg.org/multipage/system-state.html#safelisted-scheme
 BASE_FEATURE(kSafelistFTPToRegisterProtocolHandler,
@@ -2333,11 +2333,11 @@ BASE_FEATURE(kSafelistFTPToRegisterProtocolHandler,
 // https://html.spec.whatwg.org/multipage/system-state.html#safelisted-scheme
 BASE_FEATURE(kSafelistPaytoToRegisterProtocolHandler,
              "SafelistPaytoToRegisterProtocolHandler",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kPausePagesPerBrowsingContextGroup,
              "PausePagesPerBrowsingContextGroup",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kShowHudDisplayForPausedPages,
              "ShowHudDisplayForPausedPages",
@@ -2350,14 +2350,14 @@ BASE_FEATURE(kScriptStreaming,
 // Enables script streaming for non-http scripts.
 BASE_FEATURE(kScriptStreamingForNonHTTP,
              "ScriptStreamingForNonHTTP",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSelectiveInOrderScript,
              "SelectiveInOrderScript",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kSelectiveInOrderScriptTarget,
              "SelectiveInOrderScriptTarget",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 const base::FeatureParam<std::string> kSelectiveInOrderScriptAllowList{
     &kSelectiveInOrderScriptTarget, "allow_list", ""};
 
@@ -2366,13 +2366,13 @@ const base::FeatureParam<std::string> kSelectiveInOrderScriptAllowList{
 // for the requested URL.
 BASE_FEATURE(kSendCnameAliasesToSubresourceFilterFromRenderer,
              "SendCnameAliasesToSubresourceFilterFromRenderer",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Experiment of the delay from navigation to starting an update of a service
 // worker's script.
 BASE_FEATURE(kServiceWorkerUpdateDelay,
              "ServiceWorkerUpdateDelay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If disabled, client_id and resultingClientId behavior keeps the old
 // Chromium behavior even after the PlzDedicatedWorker is enabled.
@@ -2385,7 +2385,7 @@ BASE_FEATURE(kServiceWorkerClientIdAlignedWithSpec,
 // not ResourceLoadPriority::kVeryLow.
 BASE_FEATURE(kSetLowPriorityForBeacon,
              "SetLowPriorityForBeacon",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, calling setInterval(..., 0) will not clamp to 1ms.
 // Tracking bug: https://crbug.com/402694.
@@ -2395,7 +2395,7 @@ BASE_FEATURE(kSetIntervalWithoutClamp,
 
 BASE_FEATURE(kSharedStorageWorkletSharedBackingThreadImplementation,
              "SharedStorageWorkletSharedBackingThreadImplementation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSharedStorageCreateWorkletCustomDataOrigin,
              "SharedStorageCreateWorkletCustomDataOrigin",
@@ -2428,7 +2428,7 @@ BASE_FEATURE(kSpeculationRulesPrefetchFuture,
 
 BASE_FEATURE(kSpeculativeImageDecodes,
              "SpeculativeImageDecodes",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable service worker warming-up feature. (https://crbug.com/1431792)
 BASE_FEATURE(kSpeculativeServiceWorkerWarmUp,
@@ -2467,7 +2467,7 @@ const base::FeatureParam<bool> kSpeculativeServiceWorkerWarmUpOnIdleTimeout{
 // header is returned in parallel with dispatching the network request.
 BASE_FEATURE(kServiceWorkerSyntheticResponse,
              "ServiceWorkerSyntheticResponse",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Define the allowed websites to enable SyntheticResponse. Allowed urls are
 // expected to be passed as a comma separated string.
@@ -2482,7 +2482,7 @@ BASE_FEATURE_PARAM(std::string,
 // DOMContentLoad (crbug/351953350).
 BASE_FEATURE(kBoostRenderProcessForLoading,
              "BoostRenderProcessForLoading",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // An empty json array means that this feature is applied unconditionally. If
 // specified, it means that the specified URLs will be the target of the new
@@ -2529,14 +2529,14 @@ BASE_FEATURE(kStopInBackground,
     !BUILDFLAG(IS_DESKTOP_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Reduces the work done during renderer initialization.
 BASE_FEATURE(kStreamlineRendererInit,
              "StreamlineRendererInit",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kSubSampleWindowProxyUsageMetrics,
              "SubSampleWindowProxyUsageMetrics",
@@ -2548,11 +2548,11 @@ BASE_FEATURE(kStylusRichGestures,
 
 BASE_FEATURE(kThreadedBodyLoader,
              "ThreadedBodyLoader",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kThreadedPreloadScanner,
              "ThreadedPreloadScanner",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE_PARAM(bool,
                    kThrottleFrameRateOnInitialization,
@@ -2579,7 +2579,7 @@ BASE_FEATURE_PARAM(int,
 // activation) on foreground pages.
 BASE_FEATURE(kThrottleUnimportantFrameTimers,
              "ThrottleUnimportantFrameTimers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 // Interval between Javascript timer wake ups for unimportant frames (small
 // cross origin frames with no user activation) when the
 // "ThrottleUnimportantFrameTimers" feature is enabled.
@@ -2604,7 +2604,7 @@ BASE_FEATURE(kTimedHTMLParserBudget,
 // User-Agent string is overridden, instead of disabling the headers altogether.
 BASE_FEATURE(kUACHOverrideBlank,
              "UACHOverrideBlank",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, the body of `EmulateLoadStartedForInspector` is executed only
 // once per Resource per ResourceFetcher, and thus duplicated network load
@@ -2618,13 +2618,13 @@ BASE_FEATURE(kEmulateLoadStartedForInspectorOncePerResource,
 // BFCache. The purpose is to capture their source location.
 BASE_FEATURE(kUnloadBlocklisted,
              "UnloadBlocklisted",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When BeginMainFrame() is throttled, whether input-related BeginMainFrame()s
 // are marked urgent, and thus unthtrottled.
 BASE_FEATURE(kUrgentMainFrameForInput,
              "UrgentMainFrameForInput",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Uses page viewport instead of frame viewport in the Largest Contentful Paint
 // heuristic where images occupying the full viewport are ignored.
@@ -2636,7 +2636,7 @@ BASE_FEATURE(kUsePageViewportInLCP,
 // kCompressParkableStrings is enabled.
 BASE_FEATURE(kUseSnappyForParkableStrings,
              "UseSnappyForParkableStrings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Use the zstd compression algorithm for ParkableString compression.
 BASE_FEATURE(kUseZstdForParkableStrings,
@@ -2658,11 +2658,11 @@ BASE_FEATURE_PARAM(int,
 
 BASE_FEATURE(kUseThreadPoolForMediaStreamVideoTaskRunner,
              "UseThreadPoolForMediaStreamVideoTaskRunner",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kVSyncDecoding,
              "VSyncDecoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE_PARAM(base::TimeDelta,
                    kVSyncDecodingHiddenOccludedTickDuration,
                    &kVSyncDecoding,
@@ -2671,7 +2671,7 @@ BASE_FEATURE_PARAM(base::TimeDelta,
 
 BASE_FEATURE(kVSyncEncoding,
              "VSyncEncoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kWebRtcUseCaptureBeginTimestamp,
              "WebRtcUseCaptureBeginTimestamp",
@@ -2679,12 +2679,12 @@ BASE_FEATURE(kWebRtcUseCaptureBeginTimestamp,
 
 BASE_FEATURE(kWebRtcAudioSinkUseTimestampAligner,
              "WebRtcAudioSinkUseTimestampAligner",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable borderless mode for desktop PWAs. go/borderless-mode
 BASE_FEATURE(kWebAppBorderless,
              "WebAppBorderless",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls scope extensions feature in web apps. Controls parsing of
 // "scope_extensions" field in web app manifests. See explainer for more
@@ -2692,7 +2692,7 @@ BASE_FEATURE(kWebAppBorderless,
 // https://github.com/WICG/manifest-incubations/blob/gh-pages/scope_extensions-explainer.md
 BASE_FEATURE(kWebAppEnableScopeExtensions,
              "WebAppEnableScopeExtensions",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls parsing of the "lock_screen" dictionary field and its "start_url"
 // entry in web app manifests.  See explainer for more information:
@@ -2701,13 +2701,13 @@ BASE_FEATURE(kWebAppEnableScopeExtensions,
 // the content feature `kWebLockScreenApi`.
 BASE_FEATURE(kWebAppManifestLockScreen,
              "WebAppManifestLockScreen",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Allow denormals in AudioWorklet and ScriptProcessorNode, to enable strict
 // JavaScript denormal compliance.  See https://crbug.com/382005099.
 BASE_FEATURE(kWebAudioAllowDenormalInProcessing,
              "WebAudioAllowDenormalInProcessing",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Parameters can be used to control to which latency hints the feature is
 // applied.
@@ -2739,7 +2739,7 @@ BASE_FEATURE_PARAM(bool,
 // handle any necessary resampling, potentially reducing latency and overhead.
 BASE_FEATURE(kWebAudioRemoveAudioDestinationResampler,
              "WebAudioRemoveAudioDestinationResampler",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 /// Enables cache-aware WebFonts loading. See https://crbug.com/570205.
 // The feature is disabled on Android for WebView API issue discussed at
@@ -2747,7 +2747,7 @@ BASE_FEATURE(kWebAudioRemoveAudioDestinationResampler,
 BASE_FEATURE(kWebFontsCacheAwareTimeoutAdaption,
              "WebFontsCacheAwareTimeoutAdaption",
 #if BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
@@ -2781,7 +2781,7 @@ BASE_FEATURE(kWebRtcHideLocalIpsWithMdns,
 // BT709. http://crbug.com/1129243
 BASE_FEATURE(kWebRtcIgnoreUnspecifiedColorSpace,
              "WebRtcIgnoreUnspecifiedColorSpace",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Instructs WebRTC to honor the Min/Max Video Encode Accelerator dimensions.
 BASE_FEATURE(kWebRtcUseMinMaxVEADimensions,
@@ -2790,12 +2790,12 @@ BASE_FEATURE(kWebRtcUseMinMaxVEADimensions,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
 // Allow access to WebSQL APIs.
-BASE_FEATURE(kWebSQLAccess, "kWebSQLAccess", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kWebSQLAccess, "kWebSQLAccess", base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Kill switch for https://crbug.com/338955051.
 BASE_FEATURE(kWebUSBTransferSizeLimit,
@@ -2805,7 +2805,7 @@ BASE_FEATURE(kWebUSBTransferSizeLimit,
 // Enables small accelerated canvases for webview (crbug.com/1004304)
 BASE_FEATURE(kWebviewAccelerateSmallCanvases,
              "WebviewAccelerateSmallCanvases",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When adding new features or constants for features, please keep the features
 // sorted by identifier name (e.g. `kAwesomeFeature`), and the constants for
diff --git a/third_party/blink/renderer/bindings/core/v8/v8_code_cache.cc b/third_party/blink/renderer/bindings/core/v8/v8_code_cache.cc
index 3dfb9b25222c2..42e1f6fa89117 100644
--- a/third_party/blink/renderer/bindings/core/v8/v8_code_cache.cc
+++ b/third_party/blink/renderer/bindings/core/v8/v8_code_cache.cc
@@ -34,7 +34,7 @@ namespace {
 
 BASE_FEATURE(kConfigurableV8CodeCacheHotHours,
              "ConfigurableV8CodeCacheHotHours",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 MIRACLE_PARAMETER_FOR_INT(GetV8CodeCacheHotHours,
                           kConfigurableV8CodeCacheHotHours,
diff --git a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
index 9ab0efff47727..cdabf5d563c0b 100644
--- a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
+++ b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
@@ -568,7 +568,7 @@ void ThrowRangeException(v8::Isolate* isolate, const char* message) {
 
 BASE_FEATURE(kWebAssemblyUnlimitedSyncCompilation,
              "WebAssemblyUnlimitedSyncCompilation",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool WasmModuleOverride(const v8::FunctionCallbackInfo<v8::Value>& args) {
   // Return false if we want the base behavior to proceed.
diff --git a/third_party/blink/renderer/core/html/canvas/html_canvas_element.cc b/third_party/blink/renderer/core/html/canvas/html_canvas_element.cc
index 08943226678f9..ff7b008377c8a 100644
--- a/third_party/blink/renderer/core/html/canvas/html_canvas_element.cc
+++ b/third_party/blink/renderer/core/html/canvas/html_canvas_element.cc
@@ -143,7 +143,7 @@ BASE_FEATURE(kOneCopyCanvasCapture,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
diff --git a/third_party/blink/renderer/core/loader/frame_resource_fetcher_properties.cc b/third_party/blink/renderer/core/loader/frame_resource_fetcher_properties.cc
index f6a96d4020972..0a732640c0b32 100644
--- a/third_party/blink/renderer/core/loader/frame_resource_fetcher_properties.cc
+++ b/third_party/blink/renderer/core/loader/frame_resource_fetcher_properties.cc
@@ -25,7 +25,7 @@ namespace {
 // Feature for throttling field trial.
 BASE_FEATURE(kResourceLoadThrottlingTrial,
              "ResourceLoadScheduler",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Field trial parameters.
 // Note: bg_limit is supported on m61+, but bg_sub_limit is only on m63+.
diff --git a/third_party/blink/renderer/modules/mediastream/media_devices.cc b/third_party/blink/renderer/modules/mediastream/media_devices.cc
index 54b1f3d5a59c3..923dd581310d9 100644
--- a/third_party/blink/renderer/modules/mediastream/media_devices.cc
+++ b/third_party/blink/renderer/modules/mediastream/media_devices.cc
@@ -79,7 +79,7 @@ namespace blink {
 BASE_FEATURE(kEnumerateDevicesRequestAudioCapabilities,
              "EnumerateDevicesRequestAudioCapabilities",
 #if BUILDFLAG(IS_MAC)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif
diff --git a/third_party/blink/renderer/modules/mediastream/media_stream_utils.cc b/third_party/blink/renderer/modules/mediastream/media_stream_utils.cc
index 544ac735fade6..fe998e147d375 100644
--- a/third_party/blink/renderer/modules/mediastream/media_stream_utils.cc
+++ b/third_party/blink/renderer/modules/mediastream/media_stream_utils.cc
@@ -34,7 +34,7 @@ BASE_FEATURE(kGetDisplayMediaScreenScaleFactor,
 #if BUILDFLAG(IS_CHROMEOS)
              // Causes crash/timeouts on some ChromeOS devices.
              // See https://issuetracker.google.com/issues/284804471
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #else
              base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_CHROMEOS)
diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc
index cce98a46f1767..c79a1576a678e 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc
@@ -25,7 +25,7 @@ namespace blink {
 // Allow all fields to be set when calling RTCEncodedVideoFrame.setMetadata.
 BASE_FEATURE(kAllowRTCEncodedVideoFrameSetMetadataAllFields,
              "AllowRTCEncodedVideoFrameSetMetadataAllFields",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 namespace {
 static constexpr size_t kMaxNumDependencies = 8;
diff --git a/third_party/blink/renderer/modules/peerconnection/thermal_resource.cc b/third_party/blink/renderer/modules/peerconnection/thermal_resource.cc
index b8342bb4ca2f5..091ffe944e0ed 100644
--- a/third_party/blink/renderer/modules/peerconnection/thermal_resource.cc
+++ b/third_party/blink/renderer/modules/peerconnection/thermal_resource.cc
@@ -22,7 +22,7 @@ BASE_FEATURE(kWebRtcThermalResource,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
diff --git a/third_party/blink/renderer/platform/bindings/v8_per_isolate_data.cc b/third_party/blink/renderer/platform/bindings/v8_per_isolate_data.cc
index 98dbddaf57f2f..2f66b5826bd8f 100644
--- a/third_party/blink/renderer/platform/bindings/v8_per_isolate_data.cc
+++ b/third_party/blink/renderer/platform/bindings/v8_per_isolate_data.cc
@@ -60,7 +60,7 @@ namespace blink {
 
 BASE_FEATURE(kTaskAttributionInfrastructureDisabledForTesting,
              "TaskAttributionInfrastructureDisabledForTesting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 namespace {
 
diff --git a/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc b/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
index 9fa19d69da886..dee7f994d2428 100644
--- a/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
+++ b/third_party/blink/renderer/platform/graphics/canvas_resource_provider.cc
@@ -1491,13 +1491,13 @@ bool CanvasResourceProvider::CanvasImageProvider::IsHardwareDecodeCache()
 
 BASE_FEATURE(kCanvas2DAutoFlushParams,
              "Canvas2DAutoFlushParams",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When enabled, unused resources (ready to be recycled) are reclaimed after a
 // delay.
 BASE_FEATURE(kCanvas2DReclaimUnusedResources,
              "Canvas2DReclaimUnusedResources",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // The following parameters attempt to reach a compromise between not flushing
 // too often, and not accumulating an unreasonable backlog. Flushing too
diff --git a/third_party/blink/renderer/platform/graphics/web_graphics_context_3d_video_frame_pool.cc b/third_party/blink/renderer/platform/graphics/web_graphics_context_3d_video_frame_pool.cc
index 77b6545cf8656..7df58cab63807 100644
--- a/third_party/blink/renderer/platform/graphics/web_graphics_context_3d_video_frame_pool.cc
+++ b/third_party/blink/renderer/platform/graphics/web_graphics_context_3d_video_frame_pool.cc
@@ -41,7 +41,7 @@ BASE_FEATURE(kUseCopyToGpuMemoryBufferAsync,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -348,7 +348,7 @@ BASE_FEATURE(kGpuMemoryBufferReadbackFromTexture,
     BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 }  // namespace
diff --git a/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder.cc b/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder.cc
index a4afdafa18cca..62715cd091e57 100644
--- a/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder.cc
+++ b/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder.cc
@@ -394,7 +394,7 @@ BASE_FEATURE(kForceSoftwareForLowResolutions,
 #if !BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Avoids large latencies to build up by dropping frames when the number of
@@ -747,7 +747,7 @@ namespace features {
 // screensharing that uses temporal scalability.
 BASE_FEATURE(kWebRtcScreenshareSwEncoding,
              "WebRtcScreenshareSwEncoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 }  // namespace features
 
 // This private class of RTCVideoEncoder does the actual work of communicating
diff --git a/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder_factory.cc b/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder_factory.cc
index a98751649ea2d..c1b031241f6d4 100644
--- a/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder_factory.cc
+++ b/third_party/blink/renderer/platform/peerconnection/rtc_video_encoder_factory.cc
@@ -40,7 +40,7 @@ namespace {
 // Enables H.264 CBP encode acceleration for Windows.
 BASE_FEATURE(kMediaFoundationH264CbpEncoding,
              "MediaFoundationH264CbpEncoding",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 // Convert media::SVCScalabilityMode to webrtc::ScalabilityMode and fill
diff --git a/third_party/blink/renderer/platform/runtime_enabled_features.json5 b/third_party/blink/renderer/platform/runtime_enabled_features.json5
index 0d7fdc61e279a..b106cd72fe7ca 100644
--- a/third_party/blink/renderer/platform/runtime_enabled_features.json5
+++ b/third_party/blink/renderer/platform/runtime_enabled_features.json5
@@ -126,7 +126,7 @@
     //
     // The default value of the base::Feature instance is:
     //  base::FEATURE_ENABLED_BY_DEFAULT if 'status' field is 'stable", and
-    //  base::FEATURE_DISABLED_BY_DEFAULT otherwise.
+    //  base::FEATURE_ENABLED_BY_DEFAULT otherwise.
     // It can be overridden by 'base_feature_status' field.
     //
     // If the flag should be associated with a feature not in blink::features,
@@ -143,7 +143,7 @@
     // works only if base_feature is not "none".
     // If the field is missing or "", the default value depends on the 'status'
     // field.  See the comment above.
-    // "disabled" sets base::FEATURE_DISABLED_BY_DEFAULT, and "enabled" sets
+    // "disabled" sets base::FEATURE_ENABLED_BY_DEFAULT, and "enabled" sets
     // base::FEATURE_ENABLED_BY_DEFAULT.
     base_feature_status: {
       valid_type: "str",
diff --git a/third_party/blink/renderer/platform/scheduler/common/features.h b/third_party/blink/renderer/platform/scheduler/common/features.h
index 518d373bb2516..939a88fe011cb 100644
--- a/third_party/blink/renderer/platform/scheduler/common/features.h
+++ b/third_party/blink/renderer/platform/scheduler/common/features.h
@@ -15,16 +15,16 @@ namespace scheduler {
 
 BASE_FEATURE(kDedicatedWorkerThrottling,
              "BlinkSchedulerWorkerThrottling",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kBestEffortPriorityForFindInPage,
              "BlinkSchedulerBestEffortPriorityForFindInPage",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enable setting high priority database task type from field trial parameters.
 BASE_FEATURE(kHighPriorityDatabaseTaskType,
              "HighPriorityDatabaseTaskType",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // When features::kIntensiveWakeUpThrottling is enabled, wake ups from timers
 // with a high nesting level are limited to 1 per minute on a page that has been
@@ -64,7 +64,7 @@ PLATFORM_EXPORT base::TimeDelta GetIntensiveWakeUpThrottlingGracePeriod(
 // per-ASG task runner instead of the per-thread task runner.
 BASE_FEATURE(kMbiOverrideTaskRunnerHandle,
              "MbiOverrideTaskRunnerHandle",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Buffer time that we want to extend the loading state after the FMP is
 // received.
diff --git a/third_party/blink/renderer/platform/widget/compositing/layer_tree_settings.cc b/third_party/blink/renderer/platform/widget/compositing/layer_tree_settings.cc
index 811dd14185f2b..a4e7144cae11f 100644
--- a/third_party/blink/renderer/platform/widget/compositing/layer_tree_settings.cc
+++ b/third_party/blink/renderer/platform/widget/compositing/layer_tree_settings.cc
@@ -47,7 +47,7 @@ BASE_FEATURE(kUnpremultiplyAndDitherLowBitDepthTiles,
 // below, respectively. For more context, please see https://crbug.com/1245964.
 BASE_FEATURE(kScaleScrollbarAnimationTiming,
              "ScaleScrollbarAnimationTiming",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr base::FeatureParam<double> kFadeDelayScalingFactor{
     &kScaleScrollbarAnimationTiming, "fade_delay_scaling_factor",
@@ -124,7 +124,7 @@ std::pair<int, int> GetTilingInterestAreaSizes() {
 // memory than the current calculation.
 BASE_FEATURE(kAdjustTileGpuMemorySize,
              "AdjustTileGpuMemorySize",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 constexpr size_t kLargeResolutionMemoryMB = 1152;
 constexpr size_t kDefaultMemoryMB = 512;
diff --git a/third_party/blink/renderer/platform/wtf/allocator/partitions.cc b/third_party/blink/renderer/platform/wtf/allocator/partitions.cc
index 5b9594da00883..206730e7c66a2 100644
--- a/third_party/blink/renderer/platform/wtf/allocator/partitions.cc
+++ b/third_party/blink/renderer/platform/wtf/allocator/partitions.cc
@@ -58,7 +58,7 @@ BASE_FEATURE(kBlinkUseLargeEmptySlotSpanRingForBufferRoot,
 #if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT);
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif
 
 bool Partitions::initialized_ = false;
diff --git a/ui/accessibility/accessibility_features.cc b/ui/accessibility/accessibility_features.cc
index 0512d6357c2eb..ccddc952134ad 100644
--- a/ui/accessibility/accessibility_features.cc
+++ b/ui/accessibility/accessibility_features.cc
@@ -19,7 +19,7 @@ BASE_FEATURE(kAccessibilityPdfOcrForSelectToSpeak,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_CHROMEOS)
 );
 bool IsAccessibilityPdfOcrForSelectToSpeakEnabled() {
@@ -29,7 +29,7 @@ bool IsAccessibilityPdfOcrForSelectToSpeakEnabled() {
 
 BASE_FEATURE(kAccessibilityExposeSummaryAsHeading,
              "AccessibilityExposeSummaryAsHeading",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityExposeSummaryAsHeadingEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityExposeSummaryAsHeading);
@@ -37,7 +37,7 @@ bool IsAccessibilityExposeSummaryAsHeadingEnabled() {
 
 BASE_FEATURE(kAccessibilityBlockFlowIterator,
              "AccessibilityBlockFlowIterator",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityBlockFlowIteratorEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityBlockFlowIterator);
@@ -53,7 +53,7 @@ bool IsAccessibilityPruneRedundantInlineTextEnabled() {
 
 BASE_FEATURE(kAccessibilityPruneRedundantInlineConnectivity,
              "AccessibilityPruneRedundantInlineConnectivity",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityPruneRedundantInlineConnectivityEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityPruneRedundantInlineConnectivity);
@@ -61,14 +61,14 @@ bool IsAccessibilityPruneRedundantInlineConnectivityEnabled() {
 
 BASE_FEATURE(kAccessibilityTextFormatting,
              "AccessibilityTextFormatting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityTextFormattingEnabled() {
   return base::FeatureList::IsEnabled(::features::kAccessibilityTextFormatting);
 }
 
 BASE_FEATURE(kAccessibilityTreeForViews,
              "AccessibilityTreeForViews",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityTreeForViewsEnabled() {
   return base::FeatureList::IsEnabled(::features::kAccessibilityTreeForViews);
 }
@@ -83,7 +83,7 @@ bool IsViewsAccessibilitySerializeOnDataChangeEnabled() {
 
 BASE_FEATURE(kImageDescriptionsAlternateRouting,
              "ImageDescriptionsAlternateRouting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsImageDescriptionsAlternateRoutingEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kImageDescriptionsAlternateRouting);
@@ -91,14 +91,14 @@ bool IsImageDescriptionsAlternateRoutingEnabled() {
 
 BASE_FEATURE(kAutoDisableAccessibility,
              "AutoDisableAccessibility",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAutoDisableAccessibilityEnabled() {
   return base::FeatureList::IsEnabled(::features::kAutoDisableAccessibility);
 }
 
 BASE_FEATURE(kEnableAccessibilityAriaVirtualContent,
              "AccessibilityAriaVirtualContent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityAriaVirtualContentEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kEnableAccessibilityAriaVirtualContent);
@@ -106,7 +106,7 @@ bool IsAccessibilityAriaVirtualContentEnabled() {
 
 BASE_FEATURE(kEnableAccessibilityLanguageDetection,
              "AccessibilityLanguageDetection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityLanguageDetectionEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kEnableAccessibilityLanguageDetection);
@@ -114,7 +114,7 @@ bool IsAccessibilityLanguageDetectionEnabled() {
 
 BASE_FEATURE(kExtensionManifestV3NetworkSpeechSynthesis,
              "ExtensionManifestV3NetworkSpeechSynthesis",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsExtensionManifestV3NetworkSpeechSynthesisEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kExtensionManifestV3NetworkSpeechSynthesis);
@@ -122,21 +122,21 @@ bool IsExtensionManifestV3NetworkSpeechSynthesisEnabled() {
 
 BASE_FEATURE(kEnableAriaElementReflection,
              "EnableAriaElementReflection",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAriaElementReflectionEnabled() {
   return base::FeatureList::IsEnabled(::features::kEnableAriaElementReflection);
 }
 
 BASE_FEATURE(kTextBasedAudioDescription,
              "TextBasedAudioDescription",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsTextBasedAudioDescriptionEnabled() {
   return base::FeatureList::IsEnabled(::features::kTextBasedAudioDescription);
 }
 
 BASE_FEATURE(kUseAXPositionForDocumentMarkers,
              "UseAXPositionForDocumentMarkers",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsUseAXPositionForDocumentMarkersEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kUseAXPositionForDocumentMarkers);
@@ -144,7 +144,7 @@ bool IsUseAXPositionForDocumentMarkersEnabled() {
 
 BASE_FEATURE(kAXRandomizedStressTests,
              "AXRandomizedStressTests",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAXRandomizedStressTestsEnabled() {
   return base::FeatureList::IsEnabled(::features::kAXRandomizedStressTests);
 }
@@ -152,7 +152,7 @@ bool IsAXRandomizedStressTestsEnabled() {
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kIChromeAccessible,
              "IChromeAccessible",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsIChromeAccessibleEnabled() {
   return base::FeatureList::IsEnabled(::features::kIChromeAccessible);
 }
@@ -164,7 +164,7 @@ bool IsSelectiveUIAEnablementEnabled() {
   return base::FeatureList::IsEnabled(::features::kSelectiveUIAEnablement);
 }
 
-BASE_FEATURE(kUiaProvider, "UiaProvider", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kUiaProvider, "UiaProvider", base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kUiaEventOptimization,
              "UiaEventOptimization",
@@ -217,7 +217,7 @@ bool IsExperimentalAccessibilityGoogleTtsHighQualityVoicesEnabled() {
 
 BASE_FEATURE(kExperimentalAccessibilityDictationContextChecking,
              "ExperimentalAccessibilityDictationContextChecking",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsExperimentalAccessibilityDictationContextCheckingEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kExperimentalAccessibilityDictationContextChecking);
@@ -240,7 +240,7 @@ bool IsAccessibilityMouseKeysEnabled() {
 
 BASE_FEATURE(kAccessibilityCaptionsOnBrailleDisplay,
              "CaptionsOnBrailleDisplay",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityCaptionsOnBrailleDisplayEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityCaptionsOnBrailleDisplay);
@@ -278,14 +278,14 @@ bool IsAccessibilitySlowKeysEnabled() {
 
 BASE_FEATURE(kAccessibilityShakeToLocate,
              "AccessibilityShakeToLocate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityShakeToLocateEnabled() {
   return base::FeatureList::IsEnabled(::features::kAccessibilityShakeToLocate);
 }
 
 BASE_FEATURE(kAccessibilityManifestV3BrailleIme,
              "AccessibilityManifestV3BrailleIme",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityManifestV3EnabledForBrailleIme() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityManifestV3BrailleIme);
@@ -293,7 +293,7 @@ bool IsAccessibilityManifestV3EnabledForBrailleIme() {
 
 BASE_FEATURE(kAccessibilityManifestV3ChromeVox,
              "AccessibilityManifestV3ChromeVox",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityManifestV3EnabledForChromeVox() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityManifestV3ChromeVox);
@@ -301,7 +301,7 @@ bool IsAccessibilityManifestV3EnabledForChromeVox() {
 
 BASE_FEATURE(kAccessibilityManifestV3EnhancedNetworkTts,
              "AccessibilityManifestV3EnhancedNetworkTts",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityManifestV3EnabledForEnhancedNetworkTts() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityManifestV3EnhancedNetworkTts);
@@ -309,7 +309,7 @@ bool IsAccessibilityManifestV3EnabledForEnhancedNetworkTts() {
 
 BASE_FEATURE(kAccessibilityManifestV3SelectToSpeak,
              "AccessibilityManifestV3SelectToSpeak",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityManifestV3EnabledForSelectToSpeak() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityManifestV3SelectToSpeak);
@@ -317,7 +317,7 @@ bool IsAccessibilityManifestV3EnabledForSelectToSpeak() {
 
 BASE_FEATURE(kAccessibilityManifestV3SwitchAccess,
              "AccessibilityManifestV3SwitchAccess",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityManifestV3EnabledForSwitchAccess() {
   return base::FeatureList::IsEnabled(
       ::features::kAccessibilityManifestV3SwitchAccess);
@@ -327,14 +327,14 @@ bool IsAccessibilityManifestV3EnabledForSwitchAccess() {
 
 BASE_FEATURE(kAccessibilityOnScreenMode,
              "AccessibilityOnScreenAXMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsAccessibilityOnScreenAXModeEnabled() {
   return base::FeatureList::IsEnabled(::features::kAccessibilityOnScreenMode);
 }
 
 #if !BUILDFLAG(IS_ANDROID)
-BASE_FEATURE(kAXTreeFixing, "AXTreeFixing", base::FEATURE_DISABLED_BY_DEFAULT);
+BASE_FEATURE(kAXTreeFixing, "AXTreeFixing", base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAXTreeFixingEnabled() {
   return base::FeatureList::IsEnabled(::features::kAXTreeFixing);
 }
@@ -350,7 +350,7 @@ bool IsScreenAIOCREnabled() {
 
 BASE_FEATURE(kAccessibilityService,
              "AccessibilityService",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsAccessibilityServiceEnabled() {
   return base::FeatureList::IsEnabled(::features::kAccessibilityService);
 }
@@ -360,7 +360,7 @@ bool IsAccessibilityServiceEnabled() {
 // default.
 BASE_FEATURE(kDataCollectionModeForScreen2x,
              "DataCollectionModeForScreen2x",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsDataCollectionModeForScreen2xEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kDataCollectionModeForScreen2x);
@@ -368,7 +368,7 @@ bool IsDataCollectionModeForScreen2xEnabled() {
 
 BASE_FEATURE(kMainNodeAnnotations,
              "MainNodeAnnotations",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsMainNodeAnnotationsEnabled() {
   return base::FeatureList::IsEnabled(::features::kMainNodeAnnotations);
 }
@@ -378,7 +378,7 @@ BASE_FEATURE(kReadAnythingReadAloud,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_CHROMEOS)
 );
 
@@ -388,7 +388,7 @@ bool IsReadAnythingReadAloudEnabled() {
 
 BASE_FEATURE(kReadAnythingReadAloudPhraseHighlighting,
              "ReadAnythingReadAloudPhraseHighlighting",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsReadAnythingReadAloudPhraseHighlightingEnabled() {
   return base::FeatureList::IsEnabled(::features::kReadAnythingReadAloud) &&
          base::FeatureList::IsEnabled(
@@ -397,7 +397,7 @@ bool IsReadAnythingReadAloudPhraseHighlightingEnabled() {
 
 BASE_FEATURE(kReadAnythingImagesViaAlgorithm,
              "ReadAnythingImagesViaAlgorithm",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsReadAnythingImagesViaAlgorithmEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kReadAnythingImagesViaAlgorithm);
@@ -405,7 +405,7 @@ bool IsReadAnythingImagesViaAlgorithmEnabled() {
 
 BASE_FEATURE(kReadAnythingDocsIntegration,
              "ReadAnythingDocsIntegration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsReadAnythingDocsIntegrationEnabled() {
   return base::FeatureList::IsEnabled(
       ax::mojom::features::kReadAnythingDocsIntegration);
@@ -413,7 +413,7 @@ bool IsReadAnythingDocsIntegrationEnabled() {
 
 BASE_FEATURE(kReadAnythingDocsLoadMoreButton,
              "ReadAnythingDocsLoadMoreButton",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsReadAnythingDocsLoadMoreButtonEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kReadAnythingDocsLoadMoreButton);
@@ -423,7 +423,7 @@ bool IsReadAnythingDocsLoadMoreButtonEnabled() {
 // should be never enabled by default .
 BASE_FEATURE(kScreenAIDebugMode,
              "ScreenAIDebugMode",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsScreenAIDebugModeEnabled() {
   return base::FeatureList::IsEnabled(::features::kScreenAIDebugMode);
 }
@@ -442,7 +442,7 @@ bool IsScreenAITestModeEnabled() {
 // Enables the switchover to the newer NSAccessibility property-based API.
 BASE_FEATURE(kMacAccessibilityAPIMigration,
              "MacAccessibilityAPIMigration",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsMacAccessibilityAPIMigrationEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kMacAccessibilityAPIMigration);
@@ -450,7 +450,7 @@ bool IsMacAccessibilityAPIMigrationEnabled() {
 
 BASE_FEATURE(kMacAccessibilityOptimizeChildrenChanged,
              "MacAccessibilityOptimizeChildrenChanged",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsMacAccessibilityOptimizeChildrenChangedEnabled() {
   return base::FeatureList::IsEnabled(
       ::features::kMacAccessibilityOptimizeChildrenChanged);
@@ -475,7 +475,7 @@ bool IsBlockRootWindowAccessibleNameChangeEventEnabled() {
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
 BASE_FEATURE(kWasmTtsComponentUpdaterEnabled,
              "WasmTtsComponentUpdaterEnabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsWasmTtsComponentUpdaterEnabled() {
   return base::FeatureList::IsEnabled(::features::kReadAnythingReadAloud) &&
          base::FeatureList::IsEnabled(
@@ -484,7 +484,7 @@ bool IsWasmTtsComponentUpdaterEnabled() {
 
 BASE_FEATURE(kWasmTtsEngineAutoInstallDisabled,
              "WasmTtsEngineAutoInstallDisabled",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsWasmTtsEngineAutoInstallDisabled() {
   return base::FeatureList::IsEnabled(
       ::features::kWasmTtsEngineAutoInstallDisabled);
diff --git a/ui/base/ui_base_features.cc b/ui/base/ui_base_features.cc
index 7cd706befd2d6..2c000c17fcbd7 100644
--- a/ui/base/ui_base_features.cc
+++ b/ui/base/ui_base_features.cc
@@ -25,7 +25,7 @@ namespace features {
 // If enabled, the occluded region of the HWND is supplied to WindowTracker.
 BASE_FEATURE(kApplyNativeOccludedRegionToWindowTracker,
              "ApplyNativeOccludedRegionToWindowTracker",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, calculate native window occlusion - Windows-only.
 BASE_FEATURE(kCalculateNativeWinOcclusion,
@@ -36,13 +36,13 @@ BASE_FEATURE(kCalculateNativeWinOcclusion,
 // name `kApplyNativeOcclusionToCompositorType`.
 BASE_FEATURE(kApplyNativeOcclusionToCompositor,
              "ApplyNativeOcclusionToCompositor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // If enabled, native window occlusion tracking will always be used, even if
 // CHROME_HEADLESS is set.
 BASE_FEATURE(kAlwaysTrackNativeWindowOcclusionForTest,
              "AlwaysTrackNativeWindowOcclusionForTest",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Field trial param name for `kApplyNativeOcclusionToCompositor`.
 const base::FeatureParam<std::string> kApplyNativeOcclusionToCompositorType{
@@ -64,11 +64,11 @@ const char kApplyNativeOcclusionToCompositorTypeThrottleAndRelease[] =
 // https://crbug.com/895886.
 BASE_FEATURE(kSettingsShowsPerKeyboardSettings,
              "InputMethodIntegratedSettings",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kDeprecateAltClick,
              "DeprecateAltClick",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsDeprecateAltClickEnabled() {
   return base::FeatureList::IsEnabled(kDeprecateAltClick);
@@ -108,13 +108,13 @@ bool AreF11AndF12ShortcutsEnabled() {
 #if BUILDFLAG(IS_OZONE)
 BASE_FEATURE(kOzoneBubblesUsePlatformWidgets,
              "OzoneBubblesUsePlatformWidgets",
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 );
 
 // Controls whether support for Wayland's linux-drm-syncobj is enabled.
 BASE_FEATURE(kWaylandLinuxDrmSyncobj,
              "WaylandLinuxDrmSyncobj",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether support for Wayland's per-surface scaling is enabled.
 BASE_FEATURE(kWaylandPerSurfaceScale,
@@ -122,25 +122,25 @@ BASE_FEATURE(kWaylandPerSurfaceScale,
 #if BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // BUILDFLAG(IS_LINUX)
 );
 
 // Controls whether Wayland text-input-v3 protocol support is enabled.
 BASE_FEATURE(kWaylandTextInputV3,
              "WaylandTextInputV3",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether support for "Large Text" accessibility setting via UI
 // scaling is enabled.
 BASE_FEATURE(kWaylandUiScale,
              "WaylandUiScale",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Controls whether Wayland session management protocol is enabled.
 BASE_FEATURE(kWaylandSessionManagement,
              "WaylandSessionManagement",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_OZONE)
 
 #if BUILDFLAG(IS_LINUX)
@@ -149,14 +149,14 @@ BASE_FEATURE(kWaylandSessionManagement,
 COMPONENT_EXPORT(UI_BASE_FEATURES)
 BASE_FEATURE(kOverrideDefaultOzonePlatformHintToAuto,
              "OverrideDefaultOzonePlatformHintToAuto",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 #endif  // BUILDFLAG(IS_LINUX)
 
 // Update of the virtual keyboard settings UI as described in
 // https://crbug.com/876901.
 BASE_FEATURE(kInputMethodSettingsUiUpdate,
              "InputMethodSettingsUiUpdate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Uses a stylus-specific tap slop region parameter for gestures.  Stylus taps
 // tend to slip more than touch taps (presumably because the user doesn't feel
@@ -176,7 +176,7 @@ BASE_FEATURE(kSystemCursorSizeSupported,
 #if BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -196,7 +196,7 @@ BASE_FEATURE(kUiGpuRasterization,
     BUILDFLAG(IS_WIN)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -211,7 +211,7 @@ BASE_FEATURE(kUiCompositorScrollWithLayers,
 #if BUILDFLAG(IS_APPLE)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -219,7 +219,7 @@ BASE_FEATURE(kUiCompositorScrollWithLayers,
 // cc::PropertyTrees and layer lists rather than layer trees.
 BASE_FEATURE(kUiCompositorUsesLayerLists,
              "UiCompositorUsesLayerLists",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Enables the use of a touch fling curve that is based on the behavior of
 // native apps on Windows.
@@ -228,7 +228,7 @@ BASE_FEATURE(kExperimentalFlingAnimation,
 #if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_LINUX)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -239,7 +239,7 @@ BASE_FEATURE(kElasticOverscroll,
 #if BUILDFLAG(IS_ANDROID)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else  // BUILDFLAG(IS_ANDROID)
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 #endif  // BUILDFLAG(IS_WIN) || BUILDFLAG(IS_ANDROID)
@@ -247,7 +247,7 @@ BASE_FEATURE(kElasticOverscroll,
 // Enables focus follow follow cursor (sloppyfocus).
 BASE_FEATURE(kFocusFollowsCursor,
              "FocusFollowsCursor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_CHROMEOS)
 bool IsImprovedKeyboardShortcutsEnabled() {
@@ -274,7 +274,7 @@ BASE_FEATURE(kTouchTextEditingRedesign,
 #if BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -300,7 +300,7 @@ BASE_FEATURE(kEyeDropper,
     BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif
 );
 
@@ -314,7 +314,7 @@ bool IsEyeDropperEnabled() {
 // keyboard-accessible tooltips in Views UI.
 BASE_FEATURE(kKeyboardAccessibleTooltip,
              "KeyboardAccessibleTooltip",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsKeyboardAccessibleTooltipEnabled() {
   static const bool keyboard_accessible_tooltip_enabled =
@@ -332,7 +332,7 @@ bool IsSynchronousPageFlipTestingEnabled() {
 
 BASE_FEATURE(kResamplingScrollEventsExperimentalPrediction,
              "ResamplingScrollEventsExperimentalPrediction",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 const char kPredictorNameLsq[] = "lsq";
 const char kPredictorNameKalman[] = "kalman";
@@ -351,11 +351,11 @@ const char kPredictionTypeDefaultFramesRatio[] = "0.5";
 
 BASE_FEATURE(kSwipeToMoveCursor,
              "SwipeToMoveCursor",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 BASE_FEATURE(kUIDebugTools,
              "ui-debug-tools",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 bool IsSwipeToMoveCursorEnabled() {
   static const bool enabled =
@@ -392,10 +392,10 @@ bool IsRawDrawUsingMSAA() {
 
 BASE_FEATURE(kVariableRefreshRateAvailable,
              "VariableRefreshRateAvailable",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 BASE_FEATURE(kEnableVariableRefreshRate,
              "EnableVariableRefreshRate",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsVariableRefreshRateEnabled() {
   if (base::FeatureList::IsEnabled(kEnableVariableRefreshRateAlwaysOn)) {
     return true;
@@ -415,14 +415,14 @@ bool IsVariableRefreshRateEnabled() {
 }
 BASE_FEATURE(kEnableVariableRefreshRateAlwaysOn,
              "EnableVariableRefreshRateAlwaysOn",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 bool IsVariableRefreshRateAlwaysOn() {
   return base::FeatureList::IsEnabled(kEnableVariableRefreshRateAlwaysOn);
 }
 
 BASE_FEATURE(kBubbleMetricsApi,
              "BubbleMetricsApi",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 #if BUILDFLAG(IS_WIN)
 BASE_FEATURE(kUseGammaContrastRegistrySettings,
@@ -439,7 +439,7 @@ BASE_FEATURE(kEnableGestureBeginEndTypes,
 #if !BUILDFLAG(IS_CHROMEOS)
              base::FEATURE_ENABLED_BY_DEFAULT
 #else
-             base::FEATURE_DISABLED_BY_DEFAULT
+             base::FEATURE_ENABLED_BY_DEFAULT
 #endif  // !BUILDFLAG(IS_CHROMEOS)
 );
 
@@ -455,11 +455,11 @@ BASE_FEATURE(kWriteBookmarkWithoutTitle,
 // If enabled, fullscreen window state is updated asynchronously.
 BASE_FEATURE(kAsyncFullscreenWindowState,
              "AsyncFullscreenWindowState",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 // Feature flag for enabling the clipboardchange event.
 BASE_FEATURE(kClipboardChangeEvent,
              "ClipboardChangeEvent",
-             base::FEATURE_DISABLED_BY_DEFAULT);
+             base::FEATURE_ENABLED_BY_DEFAULT);
 
 }  // namespace features