Added material design mouse hover feedback support.

ui/views/animation/ink_drop_animation.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 UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/time.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/gfx/geometry/size.h"
-#include "ui/gfx/geometry/size_f.h"
 #include "ui/gfx/transform.h"
 #include "ui/views/animation/ink_drop_state.h"
 #include "ui/views/views_export.h"
 
 namespace ui {
 class CallbackLayerAnimationObserver;
 class Layer;
 class LayerAnimationObserver;
 class LayerDelegate;
 }  // namespace ui
@@ skipping 157 matching lines @@
 
   // List of observers to notify when animations have finished.
   base::ObserverList<InkDropAnimationObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropAnimation);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_H_