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

chrome/browser/dom_distiller/profile_utils.cc

 // Copyright 2014 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/dom_distiller/profile_utils.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/dom_distiller/dom_distiller_service_factory.h"
 #include "chrome/browser/dom_distiller/lazy_dom_distiller_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/dom_distiller/content/dom_distiller_viewer_source.h"
 #include "components/dom_distiller/core/url_constants.h"
 
 void RegisterDomDistillerViewerSource(Profile* profile) {
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
+  const base::CommandLine& command_line =
+      *base::CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableDomDistiller)) {
     dom_distiller::DomDistillerServiceFactory* dom_distiller_service_factory =
         dom_distiller::DomDistillerServiceFactory::GetInstance();
     // The LazyDomDistillerService deletes itself when the profile is destroyed.
     dom_distiller::LazyDomDistillerService* lazy_service =
         new dom_distiller::LazyDomDistillerService(
             profile, dom_distiller_service_factory);
     content::URLDataSource::Add(
         profile,
         new dom_distiller::DomDistillerViewerSource(
             lazy_service, dom_distiller::kDomDistillerScheme));
   }
 }