Implement notificationclose event

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 48 matching lines @@
 
 class MODULES_EXPORT Notification final : public RefCountedGarbageCollectedEventTargetWithInlineData<Notification>, public ActiveDOMObject, public WebNotificationDelegate {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(Notification);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Notification);
     DEFINE_WRAPPERTYPEINFO();
 public:
     // Used for JavaScript instantiations of the Notification object. Will automatically schedule for
     // the notification to be displayed to the user when the developer-provided data is valid.
     static Notification* create(ExecutionContext*, const String& title, const NotificationOptions&, ExceptionState&);
 
-    // Used for embedder-created Notification objects. Will initialize the Notification's state as showing.
-    static Notification* create(ExecutionContext*, int64_t persistentId, const WebNotificationData&);
+    // Used for embedder-created Notification objects. If |showing| is true, will initialize the
+    // Notification's state as showing, or as closed otherwise.
+    static Notification* create(ExecutionContext*, int64_t persistentId, const WebNotificationData&, bool showing);
 
     ~Notification() override;
 
     void close();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(click);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(show);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(close);
 
@@ skipping 73 matching lines @@
     void setState(NotificationState state) { m_state = state; }
 
     NotificationState m_state;
 
     Member<AsyncMethodRunner<Notification>> m_asyncRunner;
 };
 
 } // namespace blink
 
 #endif // Notification_h