Allow the embedder to disable the Notification constructor.

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 38 matching lines @@
 class NotificationPermissionCallback;
 struct WebNotificationData;
 
 class Notification final : public RefCountedGarbageCollectedEventTargetWithInlineData<Notification>, public ActiveDOMObject, public WebNotificationDelegate {
     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<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.
-    static Notification* create(ExecutionContext*, const String& title, const NotificationOptions&);
+    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*, const String& persistentId, const WebNotificationData&);
 
     virtual ~Notification();
 
     void close();
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(click);
     DEFINE_ATTRIBUTE_EVENT_LISTENER(show);
@@ skipping 78 matching lines @@
     void setState(NotificationState state) { m_state = state; }
 
     NotificationState m_state;
 
     AsyncMethodRunner<Notification> m_asyncRunner;
 };
 
 } // namespace blink
 
 #endif // Notification_h