The 1st patch to disambiguate message center notifications

ui/message_center/fake_message_center.h

Index: ui/message_center/fake_message_center.h
diff --git a/ui/message_center/fake_message_center.h b/ui/message_center/fake_message_center.h
index da4051b71ccc50091f8033d47aa7d1f621be9ffb..22273b8c29c767028d4c3beebb7202485cef0af1 100644
--- a/ui/message_center/fake_message_center.h
+++ b/ui/message_center/fake_message_center.h
@@ -26,9 +26,10 @@ class FakeMessageCenter : 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;