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

chrome/browser/chromeos/extensions/virtual_keyboard_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/extensions/virtual_keyboard_browsertest.h"
 
 #include <vector>
 
 #include "ash/shell.h"
@@ skipping 37 matching lines @@
 
 VirtualKeyboardBrowserTestConfig::VirtualKeyboardBrowserTestConfig()
     : base_framework_(kBaseKeyboardTestFramework),
       extension_id_(kExtensionId),
       test_dir_(kVirtualKeyboardTestDir),
       url_(kVirtualKeyboardURL) {
 }
 
 VirtualKeyboardBrowserTestConfig::~VirtualKeyboardBrowserTestConfig() {};
 
-void VirtualKeyboardBrowserTest::SetUpCommandLine(CommandLine* command_line) {
+void VirtualKeyboardBrowserTest::SetUpCommandLine(
+    base::CommandLine* command_line) {
   command_line->AppendSwitch(keyboard::switches::kEnableVirtualKeyboard);
 }
 
 void VirtualKeyboardBrowserTest::RunTest(
     const base::FilePath& file,
     const VirtualKeyboardBrowserTestConfig& config) {
   ui_test_utils::NavigateToURL(browser(), GURL(config.url_));
   content::WebContents* web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   EXPECT_TRUE(content::WaitForLoadStop(web_contents));
@@ skipping 116 matching lines @@
   bool success = false;
   EXPECT_TRUE(content::ExecuteScriptAndExtractBool(
       browser_rvh,
       "success ? verifyInput('a') : waitForInput('a');",
       &success));
   ASSERT_TRUE(success);
 }
 
 // TODO(kevers|rsadam|bshe):  Add UI tests for remaining virtual keyboard
 // functionality.