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

ui/message_center/message_center_impl.h

Index: ui/message_center/message_center_impl.h
diff --git a/ui/message_center/message_center_impl.h b/ui/message_center/message_center_impl.h
index b278cc211b28a12fec5ac3fde0e2ee4964aabc29..ad14527d23e045395e24df606b842fc9c4d606c6 100644
--- a/ui/message_center/message_center_impl.h
+++ b/ui/message_center/message_center_impl.h
@@ -135,10 +135,9 @@ class MessageCenterImpl : public MessageCenter {
   virtual ~MessageCenterImpl();
 
   // MessageCenter overrides:
-  virtual void SetDelegate(Delegate* delegate) OVERRIDE;
   virtual void AddObserver(MessageCenterObserver* observer) OVERRIDE;
   virtual void RemoveObserver(MessageCenterObserver* observer) OVERRIDE;
-  virtual void SetMessageCenterVisible(bool visible) OVERRIDE;
+  virtual void SetVisibility(Visibility visible) OVERRIDE;
   virtual bool IsMessageCenterVisible() OVERRIDE;
   virtual size_t NotificationCount() const OVERRIDE;
   virtual size_t UnreadNotificationCount() const OVERRIDE;
@@ -163,7 +162,6 @@ class MessageCenterImpl : public MessageCenter {
                                          const gfx::Image& image) OVERRIDE;
   virtual void DisableNotificationsByNotifier(
       const NotifierId& notifier_id) OVERRIDE;
-  virtual void ShowNotificationSettings(const std::string& id) OVERRIDE;
   virtual void ExpandNotification(const std::string& id) OVERRIDE;
   virtual void ClickOnNotification(const std::string& id) OVERRIDE;
   virtual void ClickOnNotificationButton(const std::string& id,
@@ -188,7 +186,6 @@ class MessageCenterImpl : public MessageCenter {
   ObserverList<MessageCenterObserver> observer_list_;
   scoped_ptr<internal::PopupTimersController> popup_timers_controller_;
   scoped_ptr<base::OneShotTimer<MessageCenterImpl> > quiet_mode_timer_;
-  Delegate* delegate_;
   NotifierSettingsProvider* settings_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterImpl);