bindings: Adds virtual ScriptWrappable::wrap method.

Source/core/events/MessageEvent.h

Index: Source/core/events/MessageEvent.h
diff --git a/Source/core/events/MessageEvent.h b/Source/core/events/MessageEvent.h
index 23c5e97128f0ed5cbc26e479ce1d7178e2e3bbf8..28558b1227c413e4c0401839f90c0b1e4244fffe 100644
--- a/Source/core/events/MessageEvent.h
+++ b/Source/core/events/MessageEvent.h
@@ -48,6 +48,7 @@ struct MessageEventInit : public EventInit {
 };
 
 class MessageEvent FINAL : public Event {
+    DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<MessageEvent> create()
     {
@@ -114,6 +115,8 @@ public:
 
     virtual void trace(Visitor*) OVERRIDE;
 
+    virtual v8::Handle<v8::Object> wrap(v8::Handle<v8::Object> creationContext, v8::Isolate*) OVERRIDE;
+
 private:
     MessageEvent();
     MessageEvent(const AtomicString&, const MessageEventInit&);