CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/blink/web_compositor_support_impl.h

Index: cc/blink/web_compositor_support_impl.h
diff --git a/cc/blink/web_compositor_support_impl.h b/cc/blink/web_compositor_support_impl.h
index fa962c33f8a2b388147dda241e1ff78e35c03f3b..989966989e624b8b08dedcadb622ca62d64abcb2 100644
--- a/cc/blink/web_compositor_support_impl.h
+++ b/cc/blink/web_compositor_support_impl.h
@@ -58,6 +58,9 @@ class CC_BLINK_EXPORT WebCompositorSupportImpl
   virtual blink::WebFilterOperations* createFilterOperations();
   virtual blink::WebDisplayItemList* createDisplayItemList();
 
+  virtual blink::WebCompositorAnimationPlayer* createAnimationPlayer();
+  virtual blink::WebCompositorAnimationTimeline* createAnimationTimeline();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WebCompositorSupportImpl);
 };