Enable GPU acceleration in 2D OffscreenCanvases on main thread

third_party/WebKit/Source/web/WebRuntimeFeatures.cpp

 /*
  * Copyright (C) 2013 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 42 matching lines @@
 void WebRuntimeFeatures::enableFeatureFromString(const std::string& name, bool enable)
 {
     RuntimeEnabledFeatures::setFeatureEnabledFromString(name, enable);
 }
 
 void WebRuntimeFeatures::enableTestOnlyFeatures(bool enable)
 {
     RuntimeEnabledFeatures::setTestFeaturesEnabled(enable);
 }
 
+void WebRuntimeFeatures::enableAccelerated2dCanvas(bool enable)
+{
+    RuntimeEnabledFeatures::setAccelerated2dCanvasEnabled(enable);
+}
+
 void WebRuntimeFeatures::enableAudioOutputDevices(bool enable)
 {
     RuntimeEnabledFeatures::setAudioOutputDevicesEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableCanvas2dImageChromium(bool enable)
 {
     RuntimeEnabledFeatures::setCanvas2dImageChromiumEnabled(enable);
 }
 
@@ skipping 271 matching lines @@
 {
     RuntimeEnabledFeatures::setAutoplayMutedVideosEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableSendBeaconThrowForBlobWithNonSimpleType(bool enable)
 {
     RuntimeEnabledFeatures::setSendBeaconThrowForBlobWithNonSimpleTypeEnabled(enable);
 }
 
 } // namespace blink