Converts overview to use common ash types

ash/wm/overview/scoped_overview_animation_settings.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_H_
 #define ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_H_
 
-#include "ash/wm/overview/overview_animation_type.h"
-#include "base/macros.h"
-#include "ui/compositor/scoped_layer_animation_settings.h"
-
-namespace aura {
-class Window;
-}  // namespace aura
-
 namespace ash {
 
-// The ScopedOveriewAnimationSettings class correctly configures the animation
-// settings for an aura::Window for a given OverviewAnimationType.
+// ScopedOverviewAnimationSettings correctly configures the animation
+// settings for a WmWindow given an OverviewAnimationType.
 class ScopedOverviewAnimationSettings {
  public:
-  ScopedOverviewAnimationSettings(OverviewAnimationType animation_type,
-                                  aura::Window* window);
-  virtual ~ScopedOverviewAnimationSettings();
-
- private:
-  // The managed animation settings.
-  ui::ScopedLayerAnimationSettings animation_settings_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScopedOverviewAnimationSettings);
+  virtual ~ScopedOverviewAnimationSettings() {}
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_OVERVIEW_SCOPED_OVERVIEW_ANIMATION_SETTINGS_H_