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

chrome/browser/extensions/extension_apitest.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 "chrome/browser/extensions/extension_apitest.h"
 
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 295 matching lines @@
     }
 
     if (use_incognito)
       ui_test_utils::OpenURLOffTheRecord(browser()->profile(), url);
     else
       ui_test_utils::NavigateToURL(browser(), url);
   } else if (launch_platform_app) {
     AppLaunchParams params(browser()->profile(), extension,
                            extensions::LAUNCH_CONTAINER_NONE, NEW_WINDOW,
                            extensions::SOURCE_TEST);
-    params.command_line = *CommandLine::ForCurrentProcess();
+    params.command_line = *base::CommandLine::ForCurrentProcess();
     OpenApplication(params);
   }
 
   if (!catcher.GetNextResult()) {
     message_ = catcher.message();
     return false;
   }
 
   return true;
 }
@@ skipping 79 matching lines @@
 
   // Build a dictionary of values that tests can use to build URLs that
   // access the test server and local file system.  Tests can see these values
   // using the extension API function chrome.test.getConfig().
   test_config_->SetInteger(kSpawnedTestServerPort,
                            test_server()->host_port_pair().port());
 
   return true;
 }
 
-void ExtensionApiTest::SetUpCommandLine(CommandLine* command_line) {
+void ExtensionApiTest::SetUpCommandLine(base::CommandLine* command_line) {
   ExtensionBrowserTest::SetUpCommandLine(command_line);
   test_data_dir_ = test_data_dir_.AppendASCII("api_test");
 }