Implement notificationclose event

content/browser/notifications/notification_event_dispatcher_impl.h

Index: content/browser/notifications/notification_event_dispatcher_impl.h
diff --git a/content/browser/notifications/notification_event_dispatcher_impl.h b/content/browser/notifications/notification_event_dispatcher_impl.h
index fbc5d429f272edd3800662c4f4c40c3e43c7dab6..7a6ff6ecdb583c4ddffad596d04fef752ba316af 100644
--- a/content/browser/notifications/notification_event_dispatcher_impl.h
+++ b/content/browser/notifications/notification_event_dispatcher_impl.h
@@ -28,6 +28,13 @@ class NotificationEventDispatcherImpl : public NotificationEventDispatcher {
       const NotificationClickDispatchCompleteCallback&
           dispatch_complete_callback) override;
 
+  void DispatchNotificationCloseEvent(

[Peter Beverloo, 2016/01/21 14:17:37]

micro nit: no blank line above here, since the comment on line 22 applies to the
block.

[Nina, 2016/01/25 14:54:55]

Done.

+      BrowserContext* browser_context,
+      int64_t persistent_notification_id,
+      const GURL& origin,
+      const NotificationClickDispatchCompleteCallback&
+          dispatch_complete_callback) override;
+
  private:
   NotificationEventDispatcherImpl();
   ~NotificationEventDispatcherImpl() override;