Add the data attribute to the Notification object

public/web/WebSerializedScriptValue.h

 /*
  * Copyright (C) 2010 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 59 matching lines @@
     bool isNull() const { return m_private.isNull(); }
 
     // Returns a string representation of the WebSerializedScriptValue.
     BLINK_EXPORT WebString toString() const;
 
     // Convert the serialized value to a parsed v8 value.
     BLINK_EXPORT v8::Local<v8::Value> deserialize();
 
 #if BLINK_IMPLEMENTATION
     WebSerializedScriptValue(const WTF::PassRefPtr<SerializedScriptValue>&);
+    WebSerializedScriptValue(SerializedScriptValue*);
     WebSerializedScriptValue& operator=(const WTF::PassRefPtr<SerializedScriptValue>&);
     operator WTF::PassRefPtr<SerializedScriptValue>() const;
 #endif
 
 private:
     WebPrivatePtr<SerializedScriptValue> m_private;
 };
 
 } // namespace blink
 
 #endif