Removing canvas rendering mode switching feature

third_party/WebKit/Source/platform/exported/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 94 matching lines @@
 }
 
 void WebRuntimeFeatures::ForceDisable2dCanvasCopyOnWrite(bool enable) {
   RuntimeEnabledFeatures::setForceDisable2dCanvasCopyOnWriteEnabled(enable);
 }
 
 void WebRuntimeFeatures::EnableDisplayList2dCanvas(bool enable) {
   RuntimeEnabledFeatures::setDisplayList2dCanvasEnabled(enable);
 }
 
-void WebRuntimeFeatures::EnableCanvas2dDynamicRenderingModeSwitching(
-    bool enable) {
-  RuntimeEnabledFeatures::setEnableCanvas2dDynamicRenderingModeSwitchingEnabled(
-      enable);
-}
-
 void WebRuntimeFeatures::EnableDocumentWriteEvaluator(bool enable) {
   RuntimeEnabledFeatures::setDocumentWriteEvaluatorEnabled(enable);
 }
 
 void WebRuntimeFeatures::EnableExperimentalCanvasFeatures(bool enable) {
   RuntimeEnabledFeatures::setExperimentalCanvasFeaturesEnabled(enable);
 }
 
 void WebRuntimeFeatures::EnableFastMobileScrolling(bool enable) {
   RuntimeEnabledFeatures::setFastMobileScrollingEnabled(enable);
@@ skipping 271 matching lines @@
 
 void WebRuntimeFeatures::EnableMediaControlsOverlayPlayButton(bool enable) {
   RuntimeEnabledFeatures::setMediaControlsOverlayPlayButtonEnabled(enable);
 }
 
 void WebRuntimeFeatures::EnableLocationHardReload(bool enable) {
   RuntimeEnabledFeatures::setLocationHardReloadEnabled(enable);
 }
 
 }  // namespace blink