Adds an ash global shortcut key for message center.

ash/system/web_notification/web_notification_tray.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_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
 #define ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_
 
 #include "ash/ash_export.h"
 #include "ash/system/tray/tray_background_view.h"
 #include "ash/system/tray/tray_views.h"
@@ skipping 59 matching lines @@
   // Returns true if the message center bubble is visible.
   bool IsMessageCenterBubbleVisible() const;
 
   // Returns true if the mouse is inside the notification bubble.
   bool IsMouseInNotificationBubble() const;
 
   message_center::MessageCenter* message_center() {
     return message_center_;
   }
 
+  // Shows or hides the message center bubble.
+  void ToggleMessageCenterBubble();
+
   // Overridden from TrayBackgroundView.
   virtual void SetShelfAlignment(ShelfAlignment alignment) OVERRIDE;
   virtual void AnchorUpdated() OVERRIDE;
   virtual string16 GetAccessibleNameForTray() OVERRIDE;
   virtual void HideBubbleWithView(
       const views::TrayBubbleView* bubble_view) OVERRIDE;
   virtual bool ClickedOutsideBubble() OVERRIDE;
 
   // Overridden from internal::ActionableView.
   virtual bool PerformAction(const ui::Event& event) OVERRIDE;
@@ skipping 18 matching lines @@
   // Overridden from WidgetObserver.
   virtual void OnWidgetClosing(views::Widget* widget) OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotifications);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, WebNotificationPopupBubble);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest,
                            ManyMessageCenterNotifications);
   FRIEND_TEST_ALL_PREFIXES(WebNotificationTrayTest, ManyPopupNotifications);
 
-  // Shows or hides the message center bubble.
-  void ToggleMessageCenterBubble();
-
   // Shows or updates the message center bubble and hides the popup bubble.
   void ShowMessageCenterBubble();
 
   // Hides the message center bubble if visible.
   void HideMessageCenterBubble();
 
   // Shows or updates the popup notification bubble if appropriate.
   void ShowPopupBubble();
 
   // Hides the notification bubble if visible.
@@ skipping 30 matching lines @@
   scoped_ptr<message_center::QuietModeBubble> quiet_mode_bubble_;
   views::ImageButton* button_;
   bool show_message_center_on_unlock_;
 
   DISALLOW_COPY_AND_ASSIGN(WebNotificationTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_WEB_NOTIFICATION_WEB_NOTIFICATION_TRAY_H_