Implement initial part of WebEmbeddedWorker

Source/core/workers/WorkerScriptLoader.h

 /*
  * Copyright (C) 2009 Apple Inc. All Rights Reserved.
  * Copyright (C) 2009, 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 40 matching lines @@
         static PassRefPtr<WorkerScriptLoader> create()
         {
             return adoptRef(new WorkerScriptLoader());
         }
 
         void loadSynchronously(ExecutionContext*, const KURL&, CrossOriginRequestPolicy);
         void loadAsynchronously(ExecutionContext*, const KURL&, CrossOriginRequestPolicy, WorkerScriptLoaderClient*);
 
         void notifyError();
 
+        // This will immediately lead to notifyFinished() if loadAsynchronously
+        // is in progress.
+        void cancel();
+
+        void setClient(WorkerScriptLoaderClient* client) { m_client = client; }
+
         String script();
         const KURL& url() const { return m_url; }
         const KURL& responseURL() const;
         bool failed() const { return m_failed; }
         unsigned long identifier() const { return m_identifier; }
 
         virtual void didReceiveResponse(unsigned long /*identifier*/, const ResourceResponse&) OVERRIDE;
         virtual void didReceiveData(const char* data, int dataLength) OVERRIDE;
         virtual void didFinishLoading(unsigned long identifier, double) OVERRIDE;
         virtual void didFail(const ResourceError&) OVERRIDE;
@@ skipping 19 matching lines @@
         KURL m_responseURL;
         bool m_failed;
         unsigned long m_identifier;
         bool m_finishing;
         ResourceRequest::TargetType m_targetType;
     };
 
 } // namespace WebCore
 
 #endif // WorkerScriptLoader_h