Rename and refactor ScrollOffsetAnimations to ScrollOffsetAnimationsImpl

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 <memory>
 #include <unordered_map>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
 #include "cc/animation/animation.h"
+#include "cc/animation/scroll_offset_animations_impl.h"

[loyso (OOO), 2016/05/04 23:47:21]

Nit: You could use forward declaration here.

 #include "cc/base/cc_export.h"
 #include "cc/trees/mutator_host_client.h"
 #include "ui/gfx/geometry/box_f.h"
 #include "ui/gfx/geometry/vector2d_f.h"
 
 namespace gfx {
 class ScrollOffset;
 }
 
 namespace cc {
@@ skipping 155 matching lines @@
   ElementToAnimationsMap element_to_animations_map_;
   ElementToAnimationsMap active_element_to_animations_map_;
 
   // A list of all timelines which this host owns.
   using IdToTimelineMap =
       std::unordered_map<int, scoped_refptr<AnimationTimeline>>;
   IdToTimelineMap id_to_timeline_map_;
 
   MutatorHostClient* mutator_host_client_;
 
-  class ScrollOffsetAnimations;
-  std::unique_ptr<ScrollOffsetAnimations> scroll_offset_animations_;
+  std::unique_ptr<ScrollOffsetAnimationsImpl> scroll_offset_animations_impl_;
 
   const ThreadInstance thread_instance_;
 
   bool supports_scroll_animations_;
   bool animation_waiting_for_deletion_;
 
   DISALLOW_COPY_AND_ASSIGN(AnimationHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ANIMATION_HOST_H_