Update animation when changes in animation keyframes are detected.

Source/core/animation/AnimationNode.h

Index: Source/core/animation/AnimationNode.h
diff --git a/Source/core/animation/AnimationNode.h b/Source/core/animation/AnimationNode.h
index b275d824848fae18372bce797386db0afb0cb978..7d333a6c4d6deadb434e514f70a5516d7758ebd8 100644
--- a/Source/core/animation/AnimationNode.h
+++ b/Source/core/animation/AnimationNode.h
@@ -104,6 +104,9 @@ public:
     PassRefPtrWillBeRawPtr<AnimationNodeTiming> timing();
     void updateSpecifiedTiming(const Timing&);
 
+    unsigned styleChangeCounter() const { return m_styleChangeCounter; }
+    void updateStyleChangeCounter(unsigned styleChangeCounter) { m_styleChangeCounter = std::max(m_styleChangeCounter, styleChangeCounter); }
+
     void computedTiming(ComputedTimingProperties&);
     ComputedTimingProperties computedTiming();
 
@@ -164,6 +167,9 @@ protected:
     String m_name;
 
     const CalculatedTiming& ensureCalculated() const;
+
+private:
+    unsigned m_styleChangeCounter;

[dstockwell, 2014/12/29 01:59:52]

This seems specific to CSSAnimations, we should store it in CSSAnimations'
m_animations map. Follow the same pattern as the TransitionMap with
RunningTransition.

[shend, 2014/12/29 03:21:37]

Done.

 };
 
 } // namespace blink