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

chrome/browser/extensions/api/networking_private/networking_private_apitest.cc

 // Copyright 2014 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 <vector>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "chrome/browser/extensions/api/networking_private/networking_private_delegate.h"
@@ skipping 231 matching lines @@
       verify_delegate->set_owner(s_test_delegate_);
     }
   }
 
   static KeyedService* GetNetworkingPrivateDelegate(
       content::BrowserContext* profile) {
     CHECK(s_test_delegate_);
     return s_test_delegate_;
   }
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     ExtensionApiTest::SetUpCommandLine(command_line);
     // Whitelist the extension ID of the test extension.
     command_line->AppendSwitchASCII(
         extensions::switches::kWhitelistedExtensionID,
         "epcifkihnkjgphfkloaaleeakhpmgdmn");
   }
 
   void SetUpOnMainThread() override {
     ExtensionApiTest::SetUpOnMainThread();
     NetworkingPrivateDelegateFactory::GetInstance()->SetTestingFactory(
@@ skipping 198 matching lines @@
   EXPECT_FALSE(RunNetworkingSubtest("getWifiTDLSStatus")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(NetworkingPrivateApiTestFail, GetCaptivePortalStatus) {
   EXPECT_FALSE(RunNetworkingSubtest("getCaptivePortalStatus")) << message_;
 }
 
 #endif // defined(OS_WIN)
 
 }  // namespace extensions