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

chrome/browser/chromeos/app_mode/kiosk_app_update_service_browsertest.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/chromeos/app_mode/kiosk_app_update_service.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 69 matching lines @@
         new base::ScopedPathOverride(chromeos::FILE_UPTIME, uptime_file));
   }
 
   void SetUpOnMainThread() override {
     extensions::PlatformAppBrowserTest::SetUpOnMainThread();
 
     app_ = LoadExtension(
         test_data_dir_.AppendASCII("api_test/runtime/on_restart_required"));
 
     // Fake app mode command line.
-    CommandLine* command = CommandLine::ForCurrentProcess();
+    base::CommandLine* command = base::CommandLine::ForCurrentProcess();
     command->AppendSwitch(switches::kForceAppMode);
     command->AppendSwitchASCII(switches::kAppId, app_->id());
 
     automatic_reboot_manager_ =
         g_browser_process->platform_part()->automatic_reboot_manager();
 
     // Wait for the |automatic_reboot_manager_| to finish initializing.
     base::RunLoop run_loop;
     base::SequencedWorkerPool* worker_pool =
         content::BrowserThread::GetBlockingPool();
@@ skipping 109 matching lines @@
 // was requested before Chrome was started.
 IN_PROC_BROWSER_TEST_F(KioskAppUpdateServiceTest, StartAfterPeriodic) {
   RequestPeriodicReboot();
 
   ExtensionTestMessageListener listener("periodic", false);
   CreateKioskAppUpdateService();
   listener.WaitUntilSatisfied();
 }
 
 }  // namespace chromeos