Allow Web Animations flags to be turned off as well as on

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 331 matching lines @@
 void WebRuntimeFeatures::enableTouch(bool enable)
 {
     RuntimeEnabledFeatures::setTouchEnabled(enable);
 }
 
 bool WebRuntimeFeatures::isTouchEnabled()
 {
     return RuntimeEnabledFeatures::touchEnabled();
 }
 
-void WebRuntimeFeatures::enableWebAnimationsCSS()
+void WebRuntimeFeatures::enableWebAnimationsCSS(bool enable)
 {
-    RuntimeEnabledFeatures::setWebAnimationsEnabled(true);
-    RuntimeEnabledFeatures::setWebAnimationsCSSEnabled(true);
+    RuntimeEnabledFeatures::setWebAnimationsEnabled(enable || RuntimeEnabledFeatures::webAnimationsSVGEnabled());
+    RuntimeEnabledFeatures::setWebAnimationsCSSEnabled(enable);
 }
 
-void WebRuntimeFeatures::enableWebAnimationsSVG()
+void WebRuntimeFeatures::enableWebAnimationsSVG(bool enable)
 {
-    RuntimeEnabledFeatures::setWebAnimationsEnabled(true);
-    RuntimeEnabledFeatures::setWebAnimationsSVGEnabled(true);
+    RuntimeEnabledFeatures::setWebAnimationsEnabled(enable || RuntimeEnabledFeatures::webAnimationsCSSEnabled());
+    RuntimeEnabledFeatures::setWebAnimationsSVGEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableWebAudio(bool enable)
 {
     RuntimeEnabledFeatures::setWebAudioEnabled(enable);
 }
 
 bool WebRuntimeFeatures::isWebAudioEnabled()
 {
     return RuntimeEnabledFeatures::webAudioEnabled();
@@ skipping 68 matching lines @@
 {
     RuntimeEnabledFeatures::setSharedWorkerEnabled(enable);
 }
 
 void WebRuntimeFeatures::enableRepaintAfterLayout(bool enable)
 {
     RuntimeEnabledFeatures::setRepaintAfterLayoutEnabled(enable);
 }
 
 } // namespace blink