Remove deprecated method Notification::detachPresenter()

public/web/WebNotification.h

 /*
  * Copyright (C) 2009 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 65 matching lines @@
     // DEPRECATED: Always returns an invalid URL.
     BLINK_EXPORT WebURL url() const;
 
     BLINK_EXPORT WebURL iconURL() const;
     BLINK_EXPORT WebString title() const;
     BLINK_EXPORT WebString body() const;
     BLINK_EXPORT WebTextDirection direction() const;
 
     BLINK_EXPORT WebString replaceId() const;
 
-    // Called if the presenter goes out of scope before the notification does.
-    BLINK_EXPORT void detachPresenter();
-
     // Called to indicate the notification has been displayed.
     BLINK_EXPORT void dispatchDisplayEvent();
 
     // Called to indicate an error has occurred with this notification.
     BLINK_EXPORT void dispatchErrorEvent(const WebString& errorMessage);
 
     // Called to indicate the notification has been closed.  If it was
     // closed by the user (as opposed to automatically by the system),
     // the byUser parameter will be true.
     BLINK_EXPORT void dispatchCloseEvent(bool byUser);
@@ skipping 23 matching lines @@
 }
 
 inline bool operator<(const WebNotification& a, const WebNotification& b)
 {
     return a.lessThan(b);
 }
 
 } // namespace blink
 
 #endif