bindings: Adds virtual ScriptWrappable::wrap method.

Source/core/html/MediaKeyEvent.h

 /*
  * Copyright (C) 2012 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 26 matching lines @@
     String keySystem;
     String sessionId;
     RefPtr<Uint8Array> initData;
     RefPtr<Uint8Array> message;
     String defaultURL;
     RefPtrWillBeMember<MediaKeyError> errorCode;
     unsigned short systemCode;
 };
 
 class MediaKeyEvent FINAL : public Event {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     virtual ~MediaKeyEvent();
 
     static PassRefPtrWillBeRawPtr<MediaKeyEvent> create()
     {
         return adoptRefWillBeNoop(new MediaKeyEvent);
     }
 
     static PassRefPtrWillBeRawPtr<MediaKeyEvent> create(const AtomicString& type, const MediaKeyEventInit& initializer)
     {
@@ skipping 20 matching lines @@
     String m_sessionId;
     RefPtr<Uint8Array> m_initData;
     RefPtr<Uint8Array> m_message;
     String m_defaultURL;
     RefPtrWillBeMember<MediaKeyError> m_errorCode;
     unsigned short m_systemCode;
 };
 
 } // namespace blink
 
-#endif
+#endif // MediaKeyEvent_h