Notifications: Add cross-platform UMA: ShowMessageCenter, ShowSettings.

ui/message_center/message_center_tray.h

 // Copyright (c) 2013 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 UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
 #define UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_
 
 #include "base/observer_list.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/message_center_observer.h"
@@ skipping 62 matching lines @@
   virtual void OnNotificationButtonClicked(
       const std::string& notification_id,
       int button_index) OVERRIDE;
   virtual void OnNotificationDisplayed(
       const std::string& notification_id) OVERRIDE;
   virtual void OnQuietModeChanged(bool in_quiet_mode) OVERRIDE;
 
  private:
   void OnMessageCenterChanged();
   void NotifyMessageCenterTrayChanged();
+  void HidePopupBubbleInternal();
 
   // |message_center_| is a weak pointer that must live longer than
   // MessageCenterTray.
   message_center::MessageCenter* message_center_;
   bool message_center_visible_;
   bool popups_visible_;
   // |delegate_| is a weak pointer that must live longer than MessageCenterTray.
   MessageCenterTrayDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterTray);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_MESSAGE_CENTER_TRAY_H_