Remove leak of objects between isolated worlds on custom events.

Source/bindings/v8/V8HiddenPropertyName.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:
  *
  *     * 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 21 matching lines @@
 #define V8HiddenPropertyName_h
 
 #include <v8.h>
 
 namespace WebCore {
 
 #define V8_HIDDEN_PROPERTIES(V) \
     V(adaptorFunctionPeer) \
     V(attributeListener) \
     V(callback) \
+    V(data) \

[haraken, 2013/06/25 02:06:58]

Would you use a more specific variable name?

[jww, 2013/06/26 02:27:06]

I just used the same name as is used in MessageEvent. I was trying to stay
consistent with the variable names used in there. Would you prefer if I named it
something like 'messageEventData'?

[haraken, 2013/06/26 04:02:31]

Makes sense. Let's leave it as is:)

     V(detail) \
     V(document) \
     V(event) \
     V(isCustomElementInterfacePrototypeObject) \
     V(listener) \
     V(name) \
     V(namespaceURI) \
     V(scriptState) \
     V(sleepFunction) \
     V(state) \
@@ skipping 13 matching lines @@
 private:
     static void createString(const char* key, v8::Persistent<v8::String>* handle);
 #define V8_DECLARE_FIELD(name) v8::Persistent<v8::String> m_##name;
     V8_HIDDEN_PROPERTIES(V8_DECLARE_FIELD);
 #undef V8_DECLARE_FIELD
 };
 
 }
 
 #endif // V8HiddenPropertyName_h