Don't PushProperties every commit for animating layers

cc/animation/layer_animation_controller.h

Index: cc/animation/layer_animation_controller.h
diff --git a/cc/animation/layer_animation_controller.h b/cc/animation/layer_animation_controller.h
index d48951f2dd6da3fd640abcb350372d3b483257d0..6df5c051bb27dd22e982cfae36c6ca3bc9c7195b 100644
--- a/cc/animation/layer_animation_controller.h
+++ b/cc/animation/layer_animation_controller.h
@@ -79,10 +79,6 @@ class CC_EXPORT LayerAnimationController
   // the future.
   bool IsAnimatingProperty(Animation::TargetProperty target_property) const;
 
-  // If a sync is forced, then the next time animation updates are pushed to the
-  // impl thread, all animations will be transferred.
-  void set_force_sync() { force_sync_ = true; }
-
   void SetAnimationRegistrar(AnimationRegistrar* registrar);
   AnimationRegistrar* animation_registrar() { return registrar_; }
 
@@ -120,8 +116,6 @@ class CC_EXPORT LayerAnimationController
       LayerAnimationController* controller_impl) const;
   void PushPropertiesToImplThread(
       LayerAnimationController* controller_impl) const;
-  void ReplaceImplThreadAnimations(
-      LayerAnimationController* controller_impl) const;
 
   void StartAnimationsWaitingForNextTick(double monotonic_time);
   void StartAnimationsWaitingForStartTime(double monotonic_time);
@@ -146,12 +140,11 @@ class CC_EXPORT LayerAnimationController
   void NotifyObserversTransformAnimated(const gfx::Transform& transform);
   void NotifyObserversFilterAnimated(const FilterOperations& filter);
 
+  void NotifyObserversAnimationWaitingForDeletion();
+
   bool HasValueObserver();
   bool HasActiveValueObserver();
 
-  // If this is true, we force a sync to the impl thread.
-  bool force_sync_;
-
   AnimationRegistrar* registrar_;
   int id_;
   ScopedPtrVector<Animation> active_animations_;