Implemented screen rotation animation experiment.

ash/rotator/window_rotation.h

 // Copyright (c) 2012 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_SCREEN_ROTATION_H_
-#define ASH_SCREEN_ROTATION_H_
+#ifndef ASH_WINDOW_ROTATION_H_
+#define ASH_WINDOW_ROTATION_H_
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/compositor/layer_animation_element.h"
 #include "ui/gfx/geometry/point.h"
 
 namespace ui {
 class InterpolatedTransform;
 class Layer;
 }
 
 namespace aura {
 class RootWindow;
 }
 
 namespace ash {
 
-// A screen rotation represents a single transition from one screen orientation
+// A window rotation represents a single transition from one window orientation
 // to another. The  intended usage is that a new instance of the class is
 // created for every transition. It is possible to update the target orientation
 // in the middle of a transition.
-class ASH_EXPORT ScreenRotation : public ui::LayerAnimationElement {
+class ASH_EXPORT WindowRotation : public ui::LayerAnimationElement {
  public:
   // |degrees| are clockwise. |layer| is the target of the animation. Does not
   // take ownership of |layer|.
-  ScreenRotation(int degrees, ui::Layer* layer);
-  ~ScreenRotation() override;
+  WindowRotation(int degrees, ui::Layer* layer);
+  ~WindowRotation() override;
 
  private:
   // Generates the intermediate transformation matrices used during the
   // animation.
   void InitTransform(ui::Layer* layer);
 
   // Implementation of ui::LayerAnimationDelegate
   void OnStart(ui::LayerAnimationDelegate* delegate) override;
   bool OnProgress(double t, ui::LayerAnimationDelegate* delegate) override;
   void OnGetTarget(TargetValue* target) const override;
   void OnAbort(ui::LayerAnimationDelegate* delegate) override;
 
   scoped_ptr<ui::InterpolatedTransform> interpolated_transform_;
 
   // The number of degrees to rotate.
   int degrees_;
 
   // The target origin.
   gfx::Point new_origin_;
 
-  DISALLOW_COPY_AND_ASSIGN(ScreenRotation);
+  DISALLOW_COPY_AND_ASSIGN(WindowRotation);
 };
 
 }  // namespace ash
 
-#endif  // ASH_SCREEN_ROTATION_H_
+#endif  // ASH_WINDOW_ROTATION_H_