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

chrome/browser/apps/ephemeral_app_throttle.cc

 // Copyright 2013 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/apps/ephemeral_app_throttle.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/apps/ephemeral_app_launcher.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 48 matching lines @@
   return true;
 }
 
 }  // namespace
 
 // static
 content::ResourceThrottle*
 EphemeralAppThrottle::MaybeCreateThrottleForLaunch(
     net::URLRequest* request,
     ProfileIOData* profile_io_data) {
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
+  if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableLinkableEphemeralApps))
     return NULL;
 
   if (request->method() != "GET" || !request->url().SchemeIsHTTPOrHTTPS())
     return NULL;
 
   // Not supported for incognito profiles.
   if (profile_io_data->IsOffTheRecord())
     return NULL;
 
@@ skipping 12 matching lines @@
     return NULL;
 
   std::string app_id(request->url().ExtractFileName());
   if (!crx_file::id_util::IdIsValid(app_id))
     return NULL;
 
   return new navigation_interception::InterceptNavigationResourceThrottle(
       request,
       base::Bind(&LaunchEphemeralApp, app_id));
 }