Enforce OffscreenCanvas.convertToBlob to terminate after idling for too long

third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h

Index: third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
index ca2fff69083b94b0cb2c03e108be4bf78c11d766..ae4caa2dca5b73c677d48cec03c1b5f33d0ddc7b 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasAsyncBlobCreator.h
@@ -83,9 +83,9 @@ class CORE_EXPORT CanvasAsyncBlobCreator
   virtual void scheduleInitiateJpegEncoding(const double&);
   virtual void idleEncodeRowsPng(double deadlineSeconds);
   virtual void idleEncodeRowsJpeg(double deadlineSeconds);
-  virtual void postDelayedTaskToMainThread(const WebTraceLocation&,
-                                           std::unique_ptr<WTF::Closure>,
-                                           double delayMs);
+  virtual void postDelayedTaskToCurrentThread(const WebTraceLocation&,
+                                              std::unique_ptr<WTF::Closure>,
+                                              double delayMs);
   virtual void signalAlternativeCodePathFinishedForTesting() {}
   virtual void createBlobAndReturnResult();
   virtual void createNullAndReturnResult();
@@ -126,13 +126,14 @@ class CORE_EXPORT CanvasAsyncBlobCreator
 
   // PNG
   bool initializePngStruct();
-  void
-  encodeRowsPngOnMainThread();  // Similar to idleEncodeRowsPng without deadline
+  void forceEncodeRowsPngOnCurrentThread();  // Similar to idleEncodeRowsPng
+                                             // without deadline
 
   // JPEG
   bool initializeJpegStruct(double quality);
-  void encodeRowsJpegOnMainThread();  // Similar to idleEncodeRowsJpeg without
-                                      // deadline
+  void forceEncodeRowsJpegOnCurrentThread();  // Similar to idleEncodeRowsJpeg
+                                              // without
+                                              // deadline
 
   // WEBP
   void encodeImageOnEncoderThread(double quality);