Move worker code from chrome\worker to content\worker.

content/worker/worker_thread.h

-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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 CHROME_WORKER_WORKER_THREAD_H_
-#define CHROME_WORKER_WORKER_THREAD_H_
+#ifndef CONTENT_WORKER_WORKER_THREAD_H_
+#define CONTENT_WORKER_WORKER_THREAD_H_
 #pragma once
 
 #include <set>
 
 #include "content/common/child_thread.h"
 
 class GURL;
 class AppCacheDispatcher;
 class DBMessageFilter;
 class WebDatabaseObserverImpl;
@@ skipping 27 matching lines @@
   scoped_ptr<AppCacheDispatcher> appcache_dispatcher_;
   scoped_ptr<WebDatabaseObserverImpl> web_database_observer_impl_;
   scoped_refptr<DBMessageFilter> db_message_filter_;
 
   typedef std::set<WebWorkerStubBase*> WorkerStubsList;
   WorkerStubsList worker_stubs_;
 
   DISALLOW_COPY_AND_ASSIGN(WorkerThread);
 };
 
-#endif  // CHROME_WORKER_WORKER_THREAD_H_
+#endif  // CONTENT_WORKER_WORKER_THREAD_H_