Add an ASSERT about cross-world wrapper leakage into ScriptValue

Source/modules/serviceworkers/RespondWithObserver.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef RespondWithObserver_h
 #define RespondWithObserver_h
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class ExecutionContext;
 class Response;
+class ScriptState;
 class ScriptValue;
 
 // This class observes the service worker's handling of a FetchEvent and
 // notifies the client.
 class RespondWithObserver FINAL : public ContextLifecycleObserver, public RefCounted<RespondWithObserver> {
 public:
     static PassRefPtr<RespondWithObserver> create(ExecutionContext*, int eventID);
     ~RespondWithObserver();
 
     virtual void contextDestroyed() OVERRIDE;
 
     void didDispatchEvent();
 
     // Observes the promise and delays calling didHandleFetchEvent() until the
     // given promise is resolved or rejected.
-    void respondWith(const ScriptValue&);
+    void respondWith(ScriptState*, const ScriptValue&);
 
     void responseWasRejected();
     void responseWasFulfilled(const ScriptValue&);
 
 private:
     class ThenFunction;
 
     RespondWithObserver(ExecutionContext*, int eventID);
 
     // Sends a response back to the client. The null response means to fallback
     // to native.
     void sendResponse(PassRefPtr<Response>);
 
     int m_eventID;
 
     enum State { Initial, Pending, Done };
     State m_state;
 };
 
 } // namespace WebCore
 
 #endif // RespondWithObserver_h