[Refactor] Introduce MediaDelegate

ash/shell.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_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 74 matching lines @@
 class DisplayController;
 class FirstRunHelper;
 class HighContrastController;
 class Launcher;
 class LauncherDelegate;
 class LauncherItemDelegate;
 class LauncherItemDelegateManager;
 class LauncherModel;
 class LockStateController;
 class MagnificationController;
+class MediaDelegate;
 class MruWindowTracker;
 class NestedDispatcherController;
 class NewWindowDelegate;
 class PartialMagnificationController;
 class PowerButtonController;
 class RootWindowHostFactory;
 class ScreenAsh;
 class SessionStateDelegate;
 class ShellDelegate;
 class ShellObserver;
@@ skipping 265 matching lines @@
   }
 
   AccessibilityDelegate* accessibility_delegate() {
     return accessibility_delegate_.get();
   }
 
   NewWindowDelegate* new_window_delegate() {
     return new_window_delegate_.get();
   }
 
+  MediaDelegate* media_delegate() {
+    return media_delegate_.get();
+  }
+
   HighContrastController* high_contrast_controller() {
     return high_contrast_controller_.get();
   }
 
   MagnificationController* magnification_controller() {
     return magnification_controller_.get();
   }
 
   PartialMagnificationController* partial_magnification_controller() {
     return partial_magnification_controller_.get();
@@ skipping 189 matching lines @@
   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
   scoped_ptr<AcceleratorController> accelerator_controller_;
   scoped_ptr<ShellDelegate> delegate_;
   scoped_ptr<SystemTrayDelegate> system_tray_delegate_;
   scoped_ptr<SystemTrayNotifier> system_tray_notifier_;
   scoped_ptr<UserWallpaperDelegate> user_wallpaper_delegate_;
   scoped_ptr<CapsLockDelegate> caps_lock_delegate_;
   scoped_ptr<SessionStateDelegate> session_state_delegate_;
   scoped_ptr<AccessibilityDelegate> accessibility_delegate_;
   scoped_ptr<NewWindowDelegate> new_window_delegate_;
+  scoped_ptr<MediaDelegate> media_delegate_;
   scoped_ptr<LauncherDelegate> launcher_delegate_;
   scoped_ptr<LauncherItemDelegateManager> launcher_item_delegate_manager_;
 
   scoped_ptr<LauncherModel> launcher_model_;
   scoped_ptr<ash::WindowPositioner> window_positioner_;
 
   scoped_ptr<internal::AppListController> app_list_controller_;
 
   scoped_ptr<internal::DragDropController> drag_drop_controller_;
   scoped_ptr<internal::ResizeShadowController> resize_shadow_controller_;
@@ skipping 86 matching lines @@
   bool simulate_modal_window_open_for_testing_;
 
   bool is_touch_hud_projection_enabled_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_