CC Animations: Port UI Browser Compositor to use compositor animation timelines.

ui/compositor/layer.h

Index: ui/compositor/layer.h
diff --git a/ui/compositor/layer.h b/ui/compositor/layer.h
index ab4151f8647079b075a948ce88e564d5f00801e8..27c66b0d77a9635bef22aeb07bf96d92d2e332b1 100644
--- a/ui/compositor/layer.h
+++ b/ui/compositor/layer.h
@@ -34,6 +34,7 @@
 class SkCanvas;
 
 namespace cc {
+class AnimationPlayer;
 class ContentLayer;
 class CopyOutputRequest;
 class DelegatedFrameProvider;
@@ -418,6 +419,13 @@ class COMPOSITOR_EXPORT Layer
   // Creates a corresponding composited layer for |type_|.
   void CreateCcLayer();
 
+  // Creates LayerAnimationController or AnimationPlayer in cc module.
+  void RegisterForAnimations(Compositor* compositor);
+  void AttachLayer();
+  void DetachLayer();
+  void AttachAnimationPlayer();
+  void DetachAnimationPlayer();
+
   // Recomputes and sets to |cc_layer_|.
   void RecomputeDrawsContentAndUVRect();
   void RecomputePosition();
@@ -500,6 +508,7 @@ class COMPOSITOR_EXPORT Layer
   LayerOwner* owner_;
 
   scoped_refptr<LayerAnimator> animator_;
+  scoped_refptr<cc::AnimationPlayer> animation_player_;
 
   // Animations that are passed to AddThreadedAnimation before this layer is
   // added to a tree.