Revert "Add [WillBeGarbageCollected] to Event.idl"

Source/modules/encryptedmedia/MediaKeyMessageEvent.h

 /*
  * Copyright (C) 2012 Google Inc.  All rights reserved.
  * Copyright (C) 2013 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 25 matching lines @@
     MediaKeyMessageEventInit();
 
     RefPtr<Uint8Array> message;
     String destinationURL;
 };
 
 class MediaKeyMessageEvent FINAL : public Event {
 public:
     virtual ~MediaKeyMessageEvent();
 
-    static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create()
+    static PassRefPtr<MediaKeyMessageEvent> create()
     {
-        return adoptRefWillBeRefCountedGarbageCollected(new MediaKeyMessageEvent);
+        return adoptRef(new MediaKeyMessageEvent);
     }
 
-    static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create(const AtomicString& type, const MediaKeyMessageEventInit& initializer)
+    static PassRefPtr<MediaKeyMessageEvent> create(const AtomicString& type, const MediaKeyMessageEventInit& initializer)
     {
-        return adoptRefWillBeRefCountedGarbageCollected(new MediaKeyMessageEvent(type, initializer));
+        return adoptRef(new MediaKeyMessageEvent(type, initializer));
     }
 
     virtual const AtomicString& interfaceName() const OVERRIDE;
 
     Uint8Array* message() const { return m_message.get(); }
     String destinationURL() const { return m_destinationURL; }
 
     virtual void trace(Visitor*) OVERRIDE;
 
 private:
     MediaKeyMessageEvent();
     MediaKeyMessageEvent(const AtomicString& type, const MediaKeyMessageEventInit& initializer);
 
     RefPtr<Uint8Array> m_message;
     String m_destinationURL;
 };
 
 } // namespace WebCore
 
 #endif