Merge the code paths for closing different kinds of notifications.

third_party/WebKit/public/platform/modules/notifications/WebNotificationDelegate.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 WebNotificationDelegate_h
 #define WebNotificationDelegate_h
 
 namespace blink {
 
+class WebString;
+
 // A delegate through which the embedder can trigger events on a Document-bound
 // Web Notifications object. Service Worker-bound Web Notifications will not
 // have a delegate, as their events will be fired on a Service Worker instead.
 class WebNotificationDelegate {
  public:
-  virtual void dispatchClickEvent() = 0;
-  virtual void dispatchShowEvent() = 0;
-  virtual void dispatchErrorEvent() = 0;
-  virtual void dispatchCloseEvent() = 0;
+  virtual void didShowNotification(const WebString& notificationId) = 0;
+  virtual void didClickNotification() = 0;
+  virtual void didCloseNotification() = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebNotificationDelegate_h