cc: Move animate steps from proxies to LayerTreeHostImpl.

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 893b42a8f759176d449ec50d3c0c58cf53e37baa..851656bde41454758dd46b32148bcf0fea0a1cb7 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -227,7 +227,7 @@ class CC_EXPORT LayerTreeHostImpl
   virtual void BeginMainFrameAborted(CommitEarlyOutReason reason);
   virtual void BeginCommit();
   virtual void CommitComplete();
-  virtual void Animate(base::TimeTicks monotonic_time);
+  virtual void Animate();
   virtual void UpdateAnimationState(bool start_ready_animations);
   void ActivateAnimations();
   void MainThreadHasStoppedFlinging();
@@ -434,8 +434,6 @@ class CC_EXPORT LayerTreeHostImpl
   virtual void SetVisible(bool visible);
   bool visible() const { return visible_; }
 
-  bool AnimationsAreVisible() { return visible() && CanDraw(); }
-
   void SetNeedsCommit() { client_->SetNeedsCommitOnImplThread(); }
   void SetNeedsAnimate();
   void SetNeedsRedraw();