Revert of Moving background animation ticking from LayerTreeHostImpl into the Scheduler.

cc/trees/thread_proxy.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_THREAD_PROXY_H_
 #define CC_TREES_THREAD_PROXY_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 235 matching lines @@
   // Called on impl thread.
   struct SchedulerStateRequest;
 
   void StartCommitOnImplThread(CompletionEvent* completion,
                                ResourceUpdateQueue* queue);
   void BeginMainFrameAbortedOnImplThread(bool did_handle);
   void FinishAllRenderingOnImplThread(CompletionEvent* completion);
   void InitializeImplOnImplThread(CompletionEvent* completion);
   void SetLayerTreeHostClientReadyOnImplThread();
   void SetVisibleOnImplThread(CompletionEvent* completion, bool visible);
+  void UpdateBackgroundAnimateTicking();
   void HasInitializedOutputSurfaceOnImplThread(
       CompletionEvent* completion,
       bool* has_initialized_output_surface);
   void DeleteContentsTexturesOnImplThread(CompletionEvent* completion);
   void InitializeOutputSurfaceOnImplThread(
       scoped_ptr<OutputSurface> output_surface);
   void FinishGLOnImplThread(CompletionEvent* completion);
   void LayerTreeHostClosedOnImplThread(CompletionEvent* completion);
   DrawResult DrawSwapInternal(bool forced_draw);
   void ForceSerializeOnSwapBuffersOnImplThread(CompletionEvent* completion);
@@ skipping 23 matching lines @@
 
   base::WeakPtr<ThreadProxy> main_thread_weak_ptr_;
   base::WeakPtr<ThreadProxy> impl_thread_weak_ptr_;
 
   DISALLOW_COPY_AND_ASSIGN(ThreadProxy);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_THREAD_PROXY_H_