Make callers of CommandLine use it via the base:: namespace.

chrome/browser/background/background_mode_manager_win.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 "base/base_paths.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/registry.h"
 #include "chrome/browser/background/background_mode_manager.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/installer/util/auto_launch_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/image/image_skia.h"
 
 using content::BrowserThread;
 
 void BackgroundModeManager::EnableLaunchOnStartup(bool should_launch) {
   // This functionality is only defined for default profile, currently.
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUserDataDir))
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kUserDataDir))
     return;
   BrowserThread::PostTask(
       BrowserThread::FILE, FROM_HERE,
       should_launch ?
           base::Bind(auto_launch_util::EnableBackgroundStartAtLogin) :
           base::Bind(auto_launch_util::DisableBackgroundStartAtLogin));
 }
 
 void BackgroundModeManager::DisplayAppInstalledNotification(
     const extensions::Extension* extension) {
   // Create a status tray notification balloon explaining to the user that
   // a background app has been installed.
   CreateStatusTrayIcon();
   status_icon_->DisplayBalloon(
       gfx::ImageSkia(),
       l10n_util::GetStringUTF16(IDS_BACKGROUND_APP_INSTALLED_BALLOON_TITLE),
       l10n_util::GetStringFUTF16(
           IDS_BACKGROUND_APP_INSTALLED_BALLOON_BODY,
           base::UTF8ToUTF16(extension->name()),
           l10n_util::GetStringUTF16(IDS_PRODUCT_NAME)));
 }
 
 base::string16 BackgroundModeManager::GetPreferencesMenuLabel() {
   return l10n_util::GetStringUTF16(IDS_OPTIONS);
 }