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

chrome/browser/invalidation/ticl_profile_settings_provider.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/invalidation/ticl_profile_settings_provider.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
@@ skipping 25 matching lines @@
     // Do not try to use GCM channel if GCM is disabled.
     return false;
   }
 
   if (profile_->GetPrefs()->GetBoolean(
           prefs::kInvalidationServiceUseGCMChannel)) {
     // Use GCM channel if it was enabled via prefs.
     return true;
   }
 
-  if (CommandLine::ForCurrentProcess()->HasSwitch(
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kInvalidationUseGCMChannel)) {
     // Use GCM channel if it was enabled via a command-line switch.
     return true;
   }
 
   // By default, do not use GCM channel.
   return false;
 }
 
 }  // namespace invalidation