Clean up forward declarations in Source/modules

Source/modules/serviceworkers/ServiceWorker.h

 /*
  * Copyright (C) 2013 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 25 matching lines @@
 #include "core/workers/AbstractWorker.h"
 #include "public/platform/WebServiceWorker.h"
 #include "public/platform/WebServiceWorkerProxy.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
-class ScriptState;
 class ScriptPromiseResolver;
 
 class ServiceWorker final : public AbstractWorker, public WebServiceWorkerProxy {
     DEFINE_WRAPPERTYPEINFO();
 public:
     // For CallbackPromiseAdapter
     typedef WebServiceWorker WebType;
     static PassRefPtrWillBeRawPtr<ServiceWorker> take(ScriptPromiseResolver*, WebType* worker);
 
     static PassRefPtrWillBeRawPtr<ServiceWorker> from(ExecutionContext*, WebType*);
@@ skipping 33 matching lines @@
     virtual bool hasPendingActivity() const override;
     virtual void stop() override;
 
     OwnPtr<WebServiceWorker> m_outerWorker;
     ProxyState m_proxyState;
 };
 
 } // namespace blink
 
 #endif // ServiceWorker_h