Revert of Remove support for legacy WebKit Notifications

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 17 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebNotification_h
 #define WebNotification_h
 
 #include "../platform/WebCommon.h"
 #include "WebTextDirection.h"
 
 #if BLINK_IMPLEMENTATION
-namespace WebCore { class Notification; }
+namespace WebCore { class NotificationBase; }
 namespace WTF { template <typename T> class PassRefPtr; }
 #endif
 
 namespace WTF {
 class AtomicString;
 }
 
 namespace blink {
 
 class WebNotificationPrivate;
@@ skipping 42 matching lines @@
 
     // 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);
 
     // Called to indicate the notification was clicked on.
     BLINK_EXPORT void dispatchClickEvent();
 
 #if BLINK_IMPLEMENTATION
-    WebNotification(const WTF::PassRefPtr<WebCore::Notification>&);
-    WebNotification& operator=(const WTF::PassRefPtr<WebCore::Notification>&);
-    operator WTF::PassRefPtr<WebCore::Notification>() const;
+    WebNotification(const WTF::PassRefPtr<WebCore::NotificationBase>&);
+    WebNotification& operator=(const WTF::PassRefPtr<WebCore::NotificationBase>&);
+    operator WTF::PassRefPtr<WebCore::NotificationBase>() const;
 #endif
 
 private:
     void assign(WebNotificationPrivate*);
     WebNotificationPrivate* m_private;
 };
 
 inline bool operator==(const WebNotification& a, const WebNotification& b)
 {
     return a.equals(b);
 }
 
 inline bool operator!=(const WebNotification& a, const WebNotification& b)
 {
     return !a.equals(b);
 }
 
 inline bool operator<(const WebNotification& a, const WebNotification& b)
 {
     return a.lessThan(b);
 }
 
 } // namespace blink
 
 #endif