Chromium

##Reproduce
The issue was found by code review, and I will provide a POC later.

##RCA
Similar to the issue(1511567) I previously reported.

1. ResetInternal calls GetPaintCanvas to get the PaintCanvas object pointer c[1], which is valid at this time.
2. Then WillDraw[2] is called, and WillDraw will call CheckForGpuContextLost, which may cause the "canvas resource provider" to be destroyed.
3. Ultimately, c->drawRect()[3] uses the PaintCanvas object pointer c obtained in step 1, resulting in an UAF.

```
https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/renderer/modules/canvas/canvas2d/base_rendering_context_2d.cc;drc=3cc22c22d7637bc5604e8fef3b0882b51a762901;l=437
void BaseRenderingContext2D::ResetInternal() {
  if (UNLIKELY(identifiability_study_helper_.ShouldUpdateBuilder())) {
    identifiability_study_helper_.UpdateBuilder(CanvasOps::kReset);
  }
  ValidateStateStack();
  state_stack_.resize(1);
  state_stack_.front() = MakeGarbageCollected<CanvasRenderingContext2DState>();
  layer_count_ = 0;
  SetIsTransformInvertible(true);
  CanvasPath::Clear();
  RestartRecording();

  // Clear the frame in case a flush previously drew to the canvas surface.
  if (cc::PaintCanvas* c = GetPaintCanvas()) {                                      << [1]
    int width = Width();  // Keeping results to avoid repetitive virtual calls.
    int height = Height();
    WillDraw(SkIRect::MakeXYWH(0, 0, width, height),                                << [2]
             CanvasPerformanceMonitor::DrawType::kOther);
    c->drawRect(SkRect::MakeXYWH(0.0f, 0.0f, width, height), GetClearFlags());      << [3]
  }

  ValidateStateStack();
  origin_tainted_by_content_ = false;
}

//CALL HIERARCHY
third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc (1 result)
    590: CheckForGpuContextLost() {... ResourceProvider()->IsGpuContextLost()) { ...}
        third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.cc (1 result)
            193: GetOrCreateCanvasResourceProvider() {... host->CheckForGpuContextLost(); ...}
                third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.cc (9 results)
                155: FinalizeFrame( reason) {... if (!GetOrCreateCanvasResourceProvider()) ...}
                    third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.cc (4 results)
                        231: PushFrame() {... FinalizeFrame(FlushReason::kOffscreenCanvasPushFrame); ...}
                            third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc (1 result)
                                536: PushFrameIfNeeded() {... return context_->PushFrame(); ...}
                                    third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc (1 result)
                                        536: PushFrameIfNeeded() {... return context_->PushFrame(); ...}
                                        third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc (1 result, 18 displayed)
                                            521: BeginFrame() {... return PushFrameIfNeeded(); ...}
                                            third_party/blink/renderer/platform/graphics/canvas_resource_dispatcher.cc (2 results, 18 displayed)
                                                344: SetNeedsBeginFrame( needs_begin_frame) {... Client()->BeginFrame(); ...}
                                                    third_party/blink/renderer/core/html/canvas/html_canvas_element.cc (1 result)
                                                    third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.cc (2 results, 4 displayed)
                                                        514: DidDraw(const rect) {... GetOrCreateResourceDispatcher()->SetNeedsBeginFrame(true); ...}
                                                            third_party/blink/renderer/core/html/canvas/canvas_rendering_context.cc (1 result)
                                                            third_party/blink/renderer/core/html/canvas/canvas_rendering_context_host.h (1 result)
                                                            third_party/blink/renderer/modules/canvas/offscreencanvas2d/offscreen_canvas_rendering_context_2d.cc (1 result)
                                                                333: WillDraw(const dirty_rect, draw_type) {... Host()->DidDraw(dirty_rect_for_commit_); ...}
                                                                    third_party/blink/renderer/modules/canvas/canvas2d/base_rendering_context_2d.cc (5 results)
                                                                        453: ResetInternal() {... WillDraw(SkIRect::MakeXYWH(0, 0, width, height), ...}

```