Move base/thread.h to base/threading, fix up callers to use the new location....

chrome/browser/browser_thread.h

 // 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 CHROME_BROWSER_BROWSER_THREAD_H_
 #define CHROME_BROWSER_BROWSER_THREAD_H_
 #pragma once
 
 #include "base/lock.h"
 #include "base/task.h"
-#include "base/thread.h"
+#include "base/threading/thread.h"
 
 namespace base {
 class MessageLoopProxy;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserThread
 //
 // This class represents a thread that is known by a browser-wide name.  For
 // example, there is one IO thread for the entire browser process, and various
@@ skipping 178 matching lines @@
   static Lock lock_;
 
   // An array of the BrowserThread objects.  This array is protected by |lock_|.
   // The threads are not owned by this array.  Typically, the threads are owned
   // on the UI thread by the g_browser_process object.  BrowserThreads remove
   // themselves from this array upon destruction.
   static BrowserThread* browser_threads_[ID_COUNT];
 };
 
 #endif  // CHROME_BROWSER_BROWSER_THREAD_H_