Move BrowserThread to content namespace.

chrome/browser/service/service_process_control_mac.mm

 // 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.
 
 #include "chrome/browser/service/service_process_control.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "chrome/common/service_process_util_posix.h"
 #include "content/public/browser/browser_thread.h"
 #include "third_party/GTM/Foundation/GTMServiceManagement.h"
 
+using content::BrowserThread;
+
 void ServiceProcessControl::Launcher::DoRun() {
   base::mac::ScopedCFTypeRef<CFDictionaryRef> launchd_plist(
       CreateServiceProcessLaunchdPlist(cmd_line_.get(), false));
   CFErrorRef error = NULL;
   if (!GTMSMJobSubmit(launchd_plist, &error)) {
     LOG(ERROR) << error;
     CFRelease(error);
   } else {
     launched_ = true;
   }
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
                           base::Bind(&Launcher::Notify, this));
 }