getImageData now finalizesFrame and disableAcceleration updates composit

third_party/WebKit/Source/core/html/HTMLCanvasElement.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 333 matching lines @@
   // will not get called, so we need to take care of business here.
   if (!did_notify_listeners_for_current_frame_)
     NotifyListenersCanvasChanged();
   did_notify_listeners_for_current_frame_ = false;
 }
 
 void HTMLCanvasElement::DidDisableAcceleration() {
   // We must force a paint invalidation on the canvas even if it's
   // content did not change because it layer was destroyed.
   DidDraw();
+  SetNeedsCompositingUpdate();
 }
 
 void HTMLCanvasElement::RestoreCanvasMatrixClipStack(
     PaintCanvas* canvas) const {
   if (context_)
     context_->RestoreCanvasMatrixClipStack(canvas);
 }
 
 void HTMLCanvasElement::DoDeferredPaintInvalidation() {
   DCHECK(!dirty_rect_.IsEmpty());
@@ skipping 1112 matching lines @@
     // Creates a placeholder layer first before Surface is created.
     surface_layer_bridge_->CreateSolidColorLayer();
   }
 }
 
 void HTMLCanvasElement::OnWebLayerReplaced() {
   SetNeedsCompositingUpdate();
 }
 
 }  // namespace blink