Refactoring animation code in accelerated path.

Source/core/rendering/RenderLayerBacking.h

Index: Source/core/rendering/RenderLayerBacking.h
diff --git a/Source/core/rendering/RenderLayerBacking.h b/Source/core/rendering/RenderLayerBacking.h
index 5a18edd82084680b941763762d4d73e2e159268c..cbfdb8cf828ca1156c765aad9a9256d5ef942d3e 100644
--- a/Source/core/rendering/RenderLayerBacking.h
+++ b/Source/core/rendering/RenderLayerBacking.h
@@ -37,6 +37,7 @@ namespace WebCore {
 
 class KeyframeList;
 class RenderLayerCompositor;
+class WebAnimationProvider;
 
 enum CompositingLayerType {
     NormalCompositingLayer, // non-tiled layer with backing store
@@ -242,9 +243,6 @@ private:
 
     void doPaintTask(GraphicsLayerPaintInfo&, GraphicsContext*, const IntRect& clip);
 
-    static CSSPropertyID graphicsLayerToCSSProperty(AnimatedPropertyID);
-    static AnimatedPropertyID cssToGraphicsLayerProperty(CSSPropertyID);
-
     RenderLayer* m_owningLayer;
 
     OwnPtr<GraphicsLayer> m_ancestorClippingLayer; // Only used if we are clipped by an ancestor which is not a stacking context.
@@ -261,6 +259,8 @@ private:
     OwnPtr<GraphicsLayer> m_scrollingLayer; // Only used if the layer is using composited scrolling.
     OwnPtr<GraphicsLayer> m_scrollingContentsLayer; // Only used if the layer is using composited scrolling.
 
+    OwnPtr<WebAnimationProvider> m_animationProvider;
+
     uint64_t m_scrollLayerID;
 
     IntRect m_compositedBounds;