Add an ASSERT about cross-world wrapper leakage into ScriptValue

Source/modules/serviceworkers/FetchEvent.cpp

 // 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.
 
 #include "config.h"
 #include "FetchEvent.h"
 
 #include "modules/serviceworkers/Request.h"
 #include "modules/serviceworkers/ServiceWorkerGlobalScope.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 PassRefPtrWillBeRawPtr<FetchEvent> FetchEvent::create()
 {
     return adoptRefWillBeNoop(new FetchEvent());
 }
 
 PassRefPtrWillBeRawPtr<FetchEvent> FetchEvent::create(PassRefPtr<RespondWithObserver> observer, PassRefPtr<Request> request)
 {
     return adoptRefWillBeNoop(new FetchEvent(observer, request));
 }
 
 Request* FetchEvent::request() const
 {
     return m_request.get();
 }
 
-void FetchEvent::respondWith(const ScriptValue& value)
+void FetchEvent::respondWith(ScriptState* scriptState, const ScriptValue& value)
 {
-    m_observer->respondWith(value);
+    m_observer->respondWith(scriptState, value);
 }
 
 const AtomicString& FetchEvent::interfaceName() const
 {
     return EventNames::FetchEvent;
 }
 
 FetchEvent::FetchEvent()
 {
     ScriptWrappable::init(this);
 }
 
 FetchEvent::FetchEvent(PassRefPtr<RespondWithObserver> observer, PassRefPtr<Request> request)
     : Event(EventTypeNames::fetch, /*canBubble=*/false, /*cancelable=*/true)
     , m_observer(observer)
     , m_request(request)
 {
     ScriptWrappable::init(this);
 }
 
 void FetchEvent::trace(Visitor* visitor)
 {
     Event::trace(visitor);
 }
 
 } // namespace WebCore