Merge the code paths for closing different kinds of notifications.

third_party/WebKit/Source/modules/notifications/Notification.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
     ~Notification() override;
 
     void close();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(click);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(show);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(close);
 
     // WebNotificationDelegate implementation.
-    void dispatchShowEvent() override;
-    void dispatchClickEvent() override;
+    void didShowNotification(const WebString& notificationId) override;
+    void didClickNotification() override;
+    void didCloseNotification() override;
     void dispatchErrorEvent() override;
-    void dispatchCloseEvent() override;
 
     String title() const;
     String dir() const;
     String lang() const;
     String body() const;
     String tag() const;
     String image() const;
     String icon() const;
     String badge() const;
     NavigatorVibration::VibrationPattern vibrate() const;
@@ skipping 72 matching lines @@
     String m_notificationId;
 
     Member<AsyncMethodRunner<Notification>> m_prepareShowMethodRunner;
 
     Member<NotificationResourcesLoader> m_loader;
 };
 
 } // namespace blink
 
 #endif // Notification_h