Skip rule matching during animations.

Source/core/animation/ActiveAnimations.h

 /*
  * 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 31 matching lines @@
 
 class CSSAnimations;
 class RenderObject;
 class Element;
 
 typedef WillBeHeapHashCountedSet<RawPtrWillBeWeakMember<AnimationPlayer> > AnimationPlayerCountedSet;
 
 class ActiveAnimations : public NoBaseWillBeGarbageCollectedFinalized<ActiveAnimations> {
     WTF_MAKE_NONCOPYABLE(ActiveAnimations);
 public:
-    ActiveAnimations()
-        : m_animationStyleChange(false)
-    {
-    }
-
+    ActiveAnimations();
     ~ActiveAnimations();
 
     // Animations that are currently active for this element, their effects will be applied
     // during a style recalc. CSS Transitions are included in this stack.
     AnimationStack& defaultStack() { return m_defaultStack; }
     const AnimationStack& defaultStack() const { return m_defaultStack; }
     // Tracks the state of active CSS Animations and Transitions. The individual animations
     // will also be part of the default stack, but the mapping betwen animation name and
     // player is kept here.
     CSSAnimations& cssAnimations() { return m_cssAnimations; }
     const CSSAnimations& cssAnimations() const { return m_cssAnimations; }
 
     // AnimationPlayers which have animations targeting this element.
     AnimationPlayerCountedSet& players() { return m_players; }
 
     bool isEmpty() const { return m_defaultStack.isEmpty() && m_cssAnimations.isEmpty() && m_players.isEmpty(); }
 
     void cancelAnimationOnCompositor();
 
     void updateAnimationFlags(RenderStyle&);
     void setAnimationStyleChange(bool animationStyleChange) { m_animationStyleChange = animationStyleChange; }
 
+    const RenderStyle* baseRenderStyle() const;
+    void updateBaseRenderStyle(const RenderStyle*);
+
 #if !ENABLE(OILPAN)
     void addAnimation(Animation* animation) { m_animations.append(animation); }
     void notifyAnimationDestroyed(Animation* animation) { m_animations.remove(m_animations.find(animation)); }
 #endif
 
     void trace(Visitor*);
 
 private:
     bool isAnimationStyleChange() const { return m_animationStyleChange; }
 
     AnimationStack m_defaultStack;
     CSSAnimations m_cssAnimations;
     AnimationPlayerCountedSet m_players;
     bool m_animationStyleChange;
+    RefPtr<RenderStyle> m_baseRenderStyle;
 
 #if !ENABLE(OILPAN)
     // FIXME: Oilpan: This is to avoid a reference cycle that keeps Elements alive
     // and won't be needed once the Node hierarchy becomes traceable.
     Vector<Animation*> m_animations;
 #endif
 
     // CSSAnimations checks if a style change is due to animation.
     friend class CSSAnimations;
 };
 
 } // namespace blink
 
 #endif