Move BrowserThread to content namespace.

chrome/browser/background/background_mode_manager_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 "base/command_line.h"
 #include "base/mac/mac_util.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 
+using content::BrowserThread;
+
 namespace {
 
 class DisableLaunchOnStartupTask : public Task {
  public:
   virtual void Run();
 };
 
 class EnableLaunchOnStartupTask : public Task {
  public:
   virtual void Run();
@@ skipping 61 matching lines @@
 
 void BackgroundModeManager::DisplayAppInstalledNotification(
     const Extension* extension) {
   // TODO(atwilson): Display a platform-appropriate notification here.
   // http://crbug.com/74970
 }
 
 string16 BackgroundModeManager::GetPreferencesMenuLabel() {
   return l10n_util::GetStringUTF16(IDS_OPTIONS);
 }