Use base::MessageLoop in more files.

content/browser/browser_thread_impl.cc

 // 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.
 
 #include "content/browser/browser_thread_impl.h"
 
 #include <string>
 
 #include "base/atomicops.h"
 #include "base/bind.h"
@@ skipping 439 matching lines @@
   return false;
 }
 
 // static
 scoped_refptr<base::MessageLoopProxy>
 BrowserThread::GetMessageLoopProxyForThread(ID identifier) {
   return make_scoped_refptr(new BrowserThreadMessageLoopProxy(identifier));
 }
 
 // static
-MessageLoop* BrowserThread::UnsafeGetMessageLoopForThread(ID identifier) {
+base::MessageLoop* BrowserThread::UnsafeGetMessageLoopForThread(ID identifier) {
   if (g_globals == NULL)
     return NULL;
 
   BrowserThreadGlobals& globals = g_globals.Get();
   base::AutoLock lock(globals.lock);
   base::Thread* thread = globals.threads[identifier];
   DCHECK(thread);
   base::MessageLoop* loop = thread->message_loop();
   return loop;
 }
 
 // static
 void BrowserThread::SetDelegate(ID identifier,
                                 BrowserThreadDelegate* delegate) {
   using base::subtle::AtomicWord;
   BrowserThreadGlobals& globals = g_globals.Get();
   AtomicWord* storage = reinterpret_cast<AtomicWord*>(
       &globals.thread_delegates[identifier]);
   AtomicWord old_pointer = base::subtle::NoBarrier_AtomicExchange(
       storage, reinterpret_cast<AtomicWord>(delegate));
 
   // This catches registration when previously registered.
   DCHECK(!delegate || !old_pointer);
 }
 
 }  // namespace content