Add support for unprefixed CSS Transforms

Source/core/animation/ActiveAnimations.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 25 matching lines @@
 namespace WebCore {
 
 bool shouldCompositeForActiveAnimations(const RenderObject& renderer)
 {
     if (!renderer.node() || !renderer.node()->isElementNode())
         return false;
 
     const Element* element = toElement(renderer.node());
     if (const ActiveAnimations* activeAnimations = element->activeAnimations()) {
         if (activeAnimations->hasActiveAnimations(CSSPropertyOpacity)
-            || activeAnimations->hasActiveAnimations(CSSPropertyWebkitTransform)
+            || activeAnimations->hasActiveAnimations(CSSPropertyTransform)

[eseidel, 2014/03/20 16:40:57]

I see Transform, but not WebKitTransform here, is that intentional?

[dstockwell, 2014/03/24 21:40:56]

Yes, in the animation system we only want to animate one of these at a time. So
both are mapped to CSSPropertyTransform internally.

             || activeAnimations->hasActiveAnimations(CSSPropertyWebkitFilter))
             return true;
     }
 
     return false;
 }
 
 bool hasActiveAnimations(const RenderObject& renderer, CSSPropertyID property)
 {
     if (!renderer.node() || !renderer.node()->isElementNode())
@@ skipping 37 matching lines @@
     return m_defaultStack.hasActiveAnimationsOnCompositor(property);
 }
 
 void ActiveAnimations::cancelAnimationOnCompositor()
 {
     for (AnimationPlayerSet::iterator it = m_players.begin(); it != players().end(); ++it)
         it->key->cancelAnimationOnCompositor();
 }
 
 } // namespace WebCore