[DRAFT] Animations: Profile hash look-ups for external mutators

cc/animation/animation_host.h

 // Copyright 2015 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_ANIMATION_ANIMATION_HOST_H_
 #define CC_ANIMATION_ANIMATION_HOST_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 47 matching lines @@
   // Parent LayerTreeHost or LayerTreeHostImpl.
   LayerTreeMutatorsClient* layer_tree_mutators_client() {
     return layer_tree_mutators_client_;
   }
   const LayerTreeMutatorsClient* layer_tree_mutators_client() const {
     return layer_tree_mutators_client_;
   }
   void SetLayerTreeMutatorsClient(LayerTreeMutatorsClient* client);
 
   void SetNeedsCommit();
+  void ReportAndClearStatsOnFrameEnd();
 
   void PushPropertiesTo(AnimationHost* host_impl);
 
   AnimationRegistrar* animation_registrar() const {
     return animation_registrar_.get();
   }
 
   void SetSupportsScrollAnimations(bool supports_scroll_animations);
   bool SupportsScrollAnimations() const;
   bool NeedsAnimateLayers() const;
@@ skipping 63 matching lines @@
   void PushTimelinesToImplThread(AnimationHost* host_impl) const;
   void RemoveTimelinesFromImplThread(AnimationHost* host_impl) const;
   void PushPropertiesToImplThread(AnimationHost* host_impl);
 
   void EraseTimelines(AnimationTimelineList::iterator begin,
                       AnimationTimelineList::iterator end);
 
   AnimationTimelineList timelines_;
   scoped_ptr<AnimationRegistrar> animation_registrar_;
   LayerTreeMutatorsClient* layer_tree_mutators_client_;
+  mutable base::TimeDelta find_player_for_layer_id_stats_;
 
   scoped_ptr<ScrollOffsetAnimations> scroll_offset_animations_;
 
   const bool is_impl_instance_;
 
   DISALLOW_COPY_AND_ASSIGN(AnimationHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ANIMATION_HOST_H_