Introduce DisplayConfigurationController

ash/display/display_animator_chromeos.h

 // Copyright 2014 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_DISPLAY_DISPLAY_ANIMATOR_H_
-#define ASH_DISPLAY_DISPLAY_ANIMATOR_H_
+#ifndef ASH_DISPLAY_DISPLAY_ANIMATOR_CHROMEOS_H_
+#define ASH_DISPLAY_DISPLAY_ANIMATOR_CHROMEOS_H_
 
 #include <map>
 
 #include "ash/ash_export.h"
+#include "ash/display/display_animator.h"
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
 #include "ui/display/chromeos/display_configurator.h"
 
 namespace aura {
 class RootWindow;
 class Window;
 }  // namespace aura
 
 namespace ui {
 class Layer;
 }  // namespace ui
 
 namespace ash {
 
-// DisplayAnimator provides the visual effects for
+// DisplayAnimatorChromeOS provides the visual effects for
 // ui::DisplayConfigurator, such like fade-out/in during changing
 // the display mode.
-class ASH_EXPORT DisplayAnimator : public ui::DisplayConfigurator::Observer {
+class ASH_EXPORT DisplayAnimatorChromeOS
+    : public DisplayAnimator,
+      public ui::DisplayConfigurator::Observer {
  public:
-  DisplayAnimator();
-  ~DisplayAnimator() override;
+  DisplayAnimatorChromeOS();
+  ~DisplayAnimatorChromeOS() override;
 
-  // Starts the fade-out animation for the all root windows.  It will
-  // call |callback| once all of the animations have finished.
-  void StartFadeOutAnimation(base::Closure callback);
-
-  // Starts the animation to clear the fade-out animation effect
-  // for the all root windows.
-  void StartFadeInAnimation();
+  // DisplayAnimator
+  void StartFadeOutAnimation(base::Closure callback) override;
+  void StartFadeInAnimation() override;
 
  protected:
   // ui::DisplayConfigurator::Observer overrides:
   void OnDisplayModeChanged(
       const ui::DisplayConfigurator::DisplayStateList& outputs) override;
   void OnDisplayModeChangeFailed(
       const ui::DisplayConfigurator::DisplayStateList& displays,
       ui::MultipleDisplayState failed_new_state) override;
 
  private:
   // Clears all hiding layers.  Note that in case that this method is called
   // during an animation, the method call will cancel all of the animations
   // and *not* call the registered callback.
   void ClearHidingLayers();
 
   std::map<aura::Window*, ui::Layer*> hiding_layers_;
   scoped_ptr<base::OneShotTimer> timer_;
-  base::WeakPtrFactory<DisplayAnimator> weak_ptr_factory_;
+  base::WeakPtrFactory<DisplayAnimatorChromeOS> weak_ptr_factory_;
 
-  DISALLOW_COPY_AND_ASSIGN(DisplayAnimator);
+  DISALLOW_COPY_AND_ASSIGN(DisplayAnimatorChromeOS);
 };
 
 }  // namespace ash
 
-#endif  // ASH_DISPLAY_DISPLAY_ANIMATOR_H_
+#endif  // ASH_DISPLAY_DISPLAY_ANIMATOR_CHROMEOS_H_