Implement notificationclose event

content/public/browser/notification_event_dispatcher.h

 // Copyright 2014 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 CONTENT_PUBLIC_BROWSER_NOTIFICATION_EVENT_DISPATCHER_H_
 #define CONTENT_PUBLIC_BROWSER_NOTIFICATION_EVENT_DISPATCHER_H_
 
 #include <stdint.h>
 #include <string>
 
@@ skipping 23 matching lines @@
   // with |persistent_notification_id| belonging to |origin|. The |callback|
   // will be invoked when it's known whether the event successfully executed.
   virtual void DispatchNotificationClickEvent(
       BrowserContext* browser_context,
       int64_t persistent_notification_id,
       const GURL& origin,
       int action_index,
       const NotificationClickDispatchCompleteCallback&
           dispatch_complete_callback) = 0;
 
+  // Dispatches the "notificationclose" event on the Service Worker associated
+  // with |persistent_notification_id| belonging to |origin|. The |callback|
+  // will be invoked when it's known whether the event successfully executed.
+  virtual void DispatchNotificationCloseEvent(
+      BrowserContext* browser_context,
+      int64_t persistent_notification_id,
+      const GURL& origin,
+      const NotificationClickDispatchCompleteCallback&
+          dispatch_complete_callback) = 0;
+
+
  protected:
   virtual ~NotificationEventDispatcher() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NOTIFICATION_EVENT_DISPATCHER_H_