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

content/worker/worker_main.cc

Index: content/worker/worker_main.cc
===================================================================
--- content/worker/worker_main.cc	(revision 78005)
+++ content/worker/worker_main.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 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.
 
@@ -7,10 +7,10 @@
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/threading/platform_thread.h"
-#include "chrome/worker/worker_thread.h"
 #include "content/common/child_process.h"
 #include "content/common/hi_res_timer_manager.h"
 #include "content/common/main_function_params.h"
+#include "content/worker/worker_thread.h"
 #include "ui/base/system_monitor/system_monitor.h"
 
 #if defined(OS_WIN)