Enable GPU acceleration in 2D OffscreenCanvases on main thread

third_party/WebKit/public/web/WebSettings.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 100 matching lines @@
     };
 
     // Sets value of a setting by its string identifier from Settings.in and
     // string representation of value. An enum's string representation is the
     // string representation of the integer value of the enum.
     virtual void setFromStrings(const WebString& name, const WebString& value) = 0;
 
     virtual bool mainFrameResizesAreOrientationChanges() const = 0;
     virtual bool shrinksViewportContentToFit() const = 0;
     virtual bool viewportEnabled() const = 0;
-    virtual void setAccelerated2dCanvasEnabled(bool) = 0;
     virtual void setAccelerated2dCanvasMSAASampleCount(int) = 0;
     virtual void setAcceleratedCompositingEnabled(bool) = 0;
     virtual void setPreferCompositingToLCDTextEnabled(bool) = 0;
     // Not implemented yet, see http://crbug.com/178119
     virtual void setAcceleratedCompositingForTransitionEnabled(bool) { }
     // If set to true, allows frames with an https origin to display passive
     // contents at an insecure URL. Otherwise, disallows it. The
     // FrameLoaderClient set to the frame may override the value set by this
     // method.
     virtual void setAccessibilityEnabled(bool) = 0;
@@ skipping 148 matching lines @@
     virtual void setWideViewportQuirkEnabled(bool) = 0;
     virtual void setXSSAuditorEnabled(bool) = 0;
 
 protected:
     ~WebSettings() { }
 };
 
 } // namespace blink
 
 #endif