CC Animations: Establish AnimationHost, AnimationTimeline and AnimationPlayer

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 84f7bf1ce625371944f008ac3aace53fce49c026..bd9db347484947fb6505148615c75f13bd25008f 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -35,6 +35,7 @@
 #include "cc/resources/tile_manager.h"
 #include "cc/scheduler/commit_earlyout_reason.h"
 #include "cc/scheduler/draw_result.h"
+#include "cc/trees/layer_tree_mutators_client.h"
 #include "skia/ext/refptr.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/geometry/rect.h"
@@ -128,7 +129,8 @@ class CC_EXPORT LayerTreeHostImpl
       public OutputSurfaceClient,
       public TopControlsManagerClient,
       public ScrollbarAnimationControllerClient,
-      public base::SupportsWeakPtr<LayerTreeHostImpl> {
+      public base::SupportsWeakPtr<LayerTreeHostImpl>,
+      public LayerTreeMutatorsClient {
  public:
   static scoped_ptr<LayerTreeHostImpl> Create(
       const LayerTreeSettings& settings,
@@ -213,6 +215,33 @@ class CC_EXPORT LayerTreeHostImpl
   void DidAnimateScrollOffset();
   void SetViewportDamage(const gfx::Rect& damage_rect);
 
+  void SetAnimationTimeline(scoped_refptr<AnimationTimeline> timeline);
+
+  void SetTreeLayerFilterMutated(int layer_id,
+                                 LayerTreeImpl* tree,
+                                 const FilterOperations& filters);
+  void SetTreeLayerOpacityMutated(int layer_id,
+                                  LayerTreeImpl* tree,
+                                  float opacity);
+  void SetTreeLayerTransformMutated(int layer_id,
+                                    LayerTreeImpl* tree,
+                                    const gfx::Transform& transform);
+
+  // LayerTreeMutatorsClient implementation.
+  AnimationRegistrar* GetAnimationRegistrar() const override;
+  bool IsLayerInActiveTree(int layer_id) const override;
+  bool IsLayerInPendingTree(int layer_id) const override;
+  void SetMutatorsNeedCommit() override;
+  void SetLayerFilterMutated(int layer_id,
+                             bool affects_active_tree,
+                             const FilterOperations& filters) override;
+  void SetLayerOpacityMutated(int layer_id,
+                              bool affects_active_tree,
+                              float opacity) override;
+  void SetLayerTransformMutated(int layer_id,
+                                bool affects_active_tree,
+                                const gfx::Transform& transform) override;
+
   virtual void PrepareTiles();
 
   // Returns DRAW_SUCCESS unless problems occured preparing the frame, and we
@@ -415,6 +444,9 @@ class CC_EXPORT LayerTreeHostImpl
   AnimationRegistrar* animation_registrar() const {
     return animation_registrar_.get();
   }
+  AnimationTimeline* animation_timeline() const {
+    return animation_timeline_.get();
+  }
 
   void SetDebugState(const LayerTreeDebugState& new_debug_state);
   const LayerTreeDebugState& debug_state() const { return debug_state_; }
@@ -718,6 +750,7 @@ class CC_EXPORT LayerTreeHostImpl
   base::TimeDelta begin_impl_frame_interval_;
 
   scoped_ptr<AnimationRegistrar> animation_registrar_;
+  scoped_refptr<AnimationTimeline> animation_timeline_;
   std::set<ScrollbarAnimationController*> scrollbar_animation_controllers_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;