Move MessageLoop to base namespace.

content/public/browser/browser_thread.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_
 #define CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/location.h"
 #include "base/message_loop_proxy.h"
 #include "base/task_runner_util.h"
 #include "base/time.h"
 #include "content/common/content_export.h"
 
 #if defined(UNIT_TEST)
 #include "base/logging.h"
 #endif  // UNIT_TEST
 
+namespace base {
 class MessageLoop;
-
-namespace base {
 class SequencedWorkerPool;
 class Thread;
 }
 
 namespace content {
 
 class BrowserThreadDelegate;
 class BrowserThreadImpl;
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 174 matching lines @@
       ID identifier);
 
   // Returns a pointer to the thread's message loop, which will become
   // invalid during shutdown, so you probably shouldn't hold onto it.
   //
   // This must not be called before the thread is started, or after
   // the thread is stopped, or it will DCHECK.
   //
   // Ownership remains with the BrowserThread implementation, so you
   // must not delete the pointer.
-  static MessageLoop* UnsafeGetMessageLoopForThread(ID identifier);
+  static base::MessageLoop* UnsafeGetMessageLoopForThread(ID identifier);
 
   // Sets the delegate for the specified BrowserThread.
   //
   // Only one delegate may be registered at a time.  Delegates may be
   // unregistered by providing a NULL pointer.
   //
   // If the caller unregisters a delegate before CleanUp has been
   // called, it must perform its own locking to ensure the delegate is
   // not deleted while unregistering.
   static void SetDelegate(ID identifier, BrowserThreadDelegate* delegate);
@@ skipping 43 matching lines @@
  private:
   friend class BrowserThreadImpl;
 
   BrowserThread() {}
   DISALLOW_COPY_AND_ASSIGN(BrowserThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_BROWSER_THREAD_H_