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

chrome/browser/extensions/api/management/management_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 <map>
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/launch_util.h"
@@ skipping 25 matching lines @@
       continue;
     found = *it;
   }
   return found;
 }
 
 }  // namespace
 
 class ExtensionManagementApiTest : public ExtensionApiTest {
  public:
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     ExtensionApiTest::SetUpCommandLine(command_line);
     command_line->AppendSwitch(switches::kEnablePanels);
   }
 
   virtual void LoadExtensions() {
     base::FilePath basedir = test_data_dir_.AppendASCII("management");
 
     // Load 5 enabled items.
     LoadNamedExtension(basedir, "enabled_extension");
     LoadNamedExtension(basedir, "enabled_app");
@@ skipping 259 matching lines @@
   ASSERT_TRUE(app_browser->is_app());
 }
 
 IN_PROC_BROWSER_TEST_F(ExtensionManagementApiTest, LaunchType) {
   LoadExtensions();
   base::FilePath basedir = test_data_dir_.AppendASCII("management");
   LoadNamedExtension(basedir, "packaged_app");
 
   ASSERT_TRUE(RunExtensionSubtest("management/test", "launchType.html"));
 }