The 1st patch to disambiguate message center notifications

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 050e4c72bdbb11e43c7b0376481b902e118fb354..f48f5dcd48979ac709404d1c570766a9b917700a 100644
--- a/ui/message_center/message_center_impl.h
+++ b/ui/message_center/message_center_impl.h
@@ -154,9 +154,10 @@ class MessageCenterImpl : public MessageCenter,
   virtual size_t NotificationCount() const OVERRIDE;
   virtual size_t UnreadNotificationCount() const OVERRIDE;
   virtual bool HasPopupNotifications() const OVERRIDE;
-  virtual bool HasNotification(const std::string& id) OVERRIDE;
   virtual bool IsQuietMode() const OVERRIDE;
   virtual bool HasClickedListener(const std::string& id) OVERRIDE;
+  virtual message_center::Notification* FindVisibleNotificationById(
+      const std::string& id) OVERRIDE;
   virtual const NotificationList::Notifications& GetVisibleNotifications()
       OVERRIDE;
   virtual NotificationList::PopupNotifications GetPopupNotifications() OVERRIDE;