Implement WebGL's commit on the main thread

third_party/WebKit/Source/modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.cpp

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/offscreencanvas2d/OffscreenCanvasRenderingContext2D.h"
 
 #include "bindings/modules/v8/OffscreenCanvasRenderingContext2DOrWebGLRenderingContextOrWebGL2RenderingContext.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/frame/Settings.h"
 #include "core/workers/WorkerGlobalScope.h"
@@ skipping 34 matching lines @@
 }
 
 void OffscreenCanvasRenderingContext2D::commit(ExceptionState& exceptionState)
 {
     if (getOffscreenCanvas()->getAssociatedCanvasId() < 0) {
         // If an OffscreenCanvas has no associated canvas Id, it indicates that
         // it is not an OffscreenCanvas created by transfering control from html
         // canvas.
         exceptionState.throwDOMException(InvalidStateError, "Commit() was called on a context whose OffscreenCanvas is not associated with a canvas element.");
     }
-    getOffscreenCanvas()->getOrCreateFrameDispatcher()->dispatchFrame();
+    getOffscreenCanvas()->getOrCreateFrameDispatcher()->dispatchFrame(nullptr);
 }
 
 // BaseRenderingContext2D implementation
 bool OffscreenCanvasRenderingContext2D::originClean() const
 {
     return getOffscreenCanvas()->originClean();
 }
 
 void OffscreenCanvasRenderingContext2D::setOriginTainted()
 {
@@ skipping 143 matching lines @@
 bool OffscreenCanvasRenderingContext2D::isContextLost() const
 {
     return false;
 }
 
 bool OffscreenCanvasRenderingContext2D::isPaintable() const
 {
     return this->imageBuffer();
 }
 }