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

chrome/browser/background/background_contents_service_factory.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 "chrome/browser/background/background_contents_service_factory.h"
 
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/background/background_contents_service.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
@@ skipping 22 matching lines @@
         BrowserContextDependencyManager::GetInstance()) {
   DependsOn(extensions::ExtensionRegistryFactory::GetInstance());
 }
 
 BackgroundContentsServiceFactory::~BackgroundContentsServiceFactory() {
 }
 
 KeyedService* BackgroundContentsServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* profile) const {
   return new BackgroundContentsService(static_cast<Profile*>(profile),
-                                       CommandLine::ForCurrentProcess());
+                                       base::CommandLine::ForCurrentProcess());
 }
 
 void BackgroundContentsServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* user_prefs) {
   user_prefs->RegisterDictionaryPref(
       prefs::kRegisteredBackgroundContents,
       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
 }
 
 content::BrowserContext*
 BackgroundContentsServiceFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextOwnInstanceInIncognito(context);
 }
 
 bool
 BackgroundContentsServiceFactory::ServiceIsCreatedWithBrowserContext() const {
   return true;
 }
 
 bool BackgroundContentsServiceFactory::ServiceIsNULLWhileTesting() const {
   return true;
 }