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

chrome/browser/chromeos/policy/blocking_login_browsertest.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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/run_loop.h"
@@ skipping 69 matching lines @@
   const bool enroll_device;
 };
 
 class BlockingLoginTest
     : public InProcessBrowserTest,
       public content::NotificationObserver,
       public testing::WithParamInterface<BlockingLoginTestParam> {
  public:
   BlockingLoginTest() : profile_added_(NULL) {}
 
-  virtual void SetUpCommandLine(CommandLine* command_line) override {
+  virtual void SetUpCommandLine(base::CommandLine* command_line) override {
     // Initialize the test server early, so that we can use its base url for
     // the command line flags.
     ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
     // Use the login manager screens and the gaia auth extension.
     command_line->AppendSwitch(switches::kLoginManager);
     command_line->AppendSwitch(switches::kForceLoginManagerInTests);
     command_line->AppendSwitchASCII(switches::kLoginProfile, "user");
     command_line->AppendSwitchASCII(::switches::kAuthExtensionPath,
                                     "gaia_auth");
@@ skipping 246 matching lines @@
     { 3, kUsernameOtherDomain, true },
     { 4, kUsernameOtherDomain, true },
     { 5, kUsernameOtherDomain, true },
 };
 
 INSTANTIATE_TEST_CASE_P(BlockingLoginTestInstance,
                         BlockingLoginTest,
                         testing::ValuesIn(kBlockinLoginTestCases));
 
 }  // namespace chromeos