Remove global set of ScopedStyleResolvers.

sky/engine/core/animation/css/CSSAnimations.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 178 matching lines @@
     }
     ASSERT(startKeyframe->properties().size() == allProperties.size());
     ASSERT(endKeyframe->properties().size() == allProperties.size());
 }
 
 } // namespace
 
 const StyleRuleKeyframes* CSSAnimations::matchScopedKeyframesRule(StyleResolver* resolver, const Element* element, const StringImpl* animationName)
 {
     // FIXME: This is all implementation detail of style resolver, CSSAnimations shouldn't be reaching into any of it.
-    if (resolver->document().styleEngine()->hasOnlyScopedResolverForDocument())
-        return element->document().scopedStyleResolver()->keyframeStylesForAnimation(animationName);
-
     Vector<RawPtr<ScopedStyleResolver>, 8> stack;
     resolver->styleTreeResolveScopedKeyframesRules(element, stack);
     if (stack.isEmpty())
         return 0;
 
     for (size_t i = 0; i < stack.size(); ++i) {
         if (const StyleRuleKeyframes* keyframesRule = stack.at(i)->keyframeStylesForAnimation(animationName))
             return keyframesRule;
     }
     return 0;
@@ skipping 430 matching lines @@
     case CSSPropertyTransitionDuration:
     case CSSPropertyTransitionProperty:
     case CSSPropertyTransitionTimingFunction:
         return false;
     default:
         return true;
     }
 }
 
 } // namespace blink