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

chrome/worker/worker_thread.h

-// Copyright (c) 2009 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_
-#pragma once
-
-#include <set>
-
-#include "content/common/child_thread.h"
-
-class GURL;
-class AppCacheDispatcher;
-class DBMessageFilter;
-class WebDatabaseObserverImpl;
-class WebWorkerStubBase;
-class WorkerWebKitClientImpl;
-struct WorkerProcessMsg_CreateWorker_Params;
-
-class WorkerThread : public ChildThread {
- public:
-  WorkerThread();
-  ~WorkerThread();
-
-  // Returns the one worker thread.
-  static WorkerThread* current();
-
-  // Invoked from stub constructors/destructors. Stubs own themselves.
-  void AddWorkerStub(WebWorkerStubBase* stub);
-  void RemoveWorkerStub(WebWorkerStubBase* stub);
-
-  AppCacheDispatcher* appcache_dispatcher() {
-    return appcache_dispatcher_.get();
-  }
-
- private:
-  virtual bool OnControlMessageReceived(const IPC::Message& msg);
-  virtual void OnChannelError();
-
-  void OnCreateWorker(const WorkerProcessMsg_CreateWorker_Params& params);
-
-  scoped_ptr<WorkerWebKitClientImpl> webkit_client_;
-  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_