bindings: Adds virtual ScriptWrappable::wrap method.

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 23 matching lines @@
 namespace blink {
 
 struct MediaKeyMessageEventInit : public EventInit {
     MediaKeyMessageEventInit();
 
     RefPtr<ArrayBuffer> message;
     String destinationURL;
 };
 
 class MediaKeyMessageEvent FINAL : public Event {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~MediaKeyMessageEvent();
 
     static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create()
     {
         return adoptRefWillBeNoop(new MediaKeyMessageEvent);
     }
 
     static PassRefPtrWillBeRawPtr<MediaKeyMessageEvent> create(const AtomicString& type, const MediaKeyMessageEventInit& initializer)
     {
@@ skipping 10 matching lines @@
 private:
     MediaKeyMessageEvent();
     MediaKeyMessageEvent(const AtomicString& type, const MediaKeyMessageEventInit& initializer);
 
     RefPtr<ArrayBuffer> m_message;
     String m_destinationURL;
 };
 
 } // namespace blink
 
-#endif
+#endif // MediaKeyMessageEvent_h