Move platform_thread to base/threading and put in the base namespace. I left ...

base/thread.h

-// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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 BASE_THREAD_H_
 #define BASE_THREAD_H_
 #pragma once
 
 #include <string>
 
 #include "base/message_loop.h"
 #include "base/message_loop_proxy.h"
-#include "base/platform_thread.h"
+#include "base/threading/platform_thread.h"
 
 namespace base {
 
 // A simple thread abstraction that establishes a MessageLoop on a new thread.
 // The consumer uses the MessageLoop of the thread to cause code to execute on
 // the thread.  When this object is destroyed the thread is terminated.  All
 // pending tasks queued on the thread's message loop will run to completion
 // before the thread is terminated.
 //
 // After the thread is stopped, the destruction sequence is:
@@ skipping 162 matching lines @@
   std::string name_;
 
   friend class ThreadQuitTask;
 
   DISALLOW_COPY_AND_ASSIGN(Thread);
 };
 
 }  // namespace base
 
 #endif  // BASE_THREAD_H_