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

chrome/browser/extensions/convert_web_app_browsertest.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 <string>
 
 #include "base/command_line.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 42 matching lines @@
         base::MessageLoopForUI::current()->Quit();
       }
     }
   }
 };
 
 // TODO(samarth): delete along with rest of the NTP4 code.
 IN_PROC_BROWSER_TEST_F(ExtensionFromWebAppTest, DISABLED_Basic) {
 #if defined(OS_WIN) && defined(USE_ASH)
   // Disable this test in Metro+Ash for now (http://crbug.com/262796).
-  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAshBrowserTests))
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAshBrowserTests))
     return;
 #endif
 
   ExtensionService* service =
       ExtensionSystem::Get(browser()->profile())->extension_service();
   service->set_show_extensions_prompts(false);
 
   content::NotificationRegistrar registrar;
   registrar.Add(this,
                 extensions::NOTIFICATION_EXTENSION_WILL_BE_INSTALLED_DEPRECATED,
@@ skipping 21 matching lines @@
             AppLaunchInfo::GetLaunchContainer(installed_extension_));
   EXPECT_EQ(0u,
             installed_extension_->permissions_data()
                 ->active_permissions()
                 ->apis()
                 .size());
   EXPECT_EQ(0u, IconsInfo::GetIcons(installed_extension_).map().size());
 }
 
 }  // namespace extensions