Use an auxiliary list of animation controllers.

cc/single_thread_proxy.cc

 // 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.
 
 #include "cc/single_thread_proxy.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/draw_quad.h"
 #include "cc/layer_tree_host.h"
 #include "cc/output_surface.h"
@@ skipping 223 matching lines @@
 {
     // Thread-only feature.
     NOTREACHED();
 }
 
 bool SingleThreadProxy::commitRequested() const
 {
     return false;
 }
 
-void SingleThreadProxy::didAddAnimation()
-{
-}
-
 size_t SingleThreadProxy::maxPartialTextureUpdates() const
 {
     return std::numeric_limits<size_t>::max();
 }
 
 void SingleThreadProxy::stop()
 {
     TRACE_EVENT0("cc", "SingleThreadProxy::stop");
     DCHECK(Proxy::isMainThread());
     {
@@ skipping 136 matching lines @@
 
 void SingleThreadProxy::didSwapFrame()
 {
     if (m_nextFrameIsNewlyCommittedFrame) {
         m_nextFrameIsNewlyCommittedFrame = false;
         m_layerTreeHost->didCommitAndDrawFrame();
     }
 }
 
 }  // namespace cc