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

chrome/browser/ui/webui/signin/inline_login_ui_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 "base/command_line.h"
 #include "chrome/browser/signin/signin_promo.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/webui/signin/inline_login_ui.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service.h"
@@ skipping 146 matching lines @@
   void SetUp() override {
     ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
     // EmbeddedTestServer spawns a thread to initialize socket.
     // Stop IO thread in preparation for fork and exec.
     embedded_test_server()->StopThread();
 
     InProcessBrowserTest::SetUp();
   }
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     const GURL& base_url = embedded_test_server()->base_url();
     command_line->AppendSwitchASCII(::switches::kGaiaUrl, base_url.spec());
     command_line->AppendSwitchASCII(::switches::kLsoUrl, base_url.spec());
     command_line->AppendSwitchASCII(::switches::kGoogleApisUrl,
                                     base_url.spec());
   }
 
   void SetUpOnMainThread() override {
     embedded_test_server()->RestartThreadAndListen();
 
@@ skipping 113 matching lines @@
       ->AddObserver(&observer);
   base::RunLoop run_loop;
   EXPECT_CALL(observer, OnUntrustedLoginUIShown())
       .WillOnce(InvokeWithoutArgs(&run_loop, &base::RunLoop::Quit));
 
   ExecuteJsToSigninInSigninFrame(browser(), "email", "password");
   run_loop.Run();
   base::MessageLoop::current()->RunUntilIdle();
 }
 #endif // OS_CHROMEOS