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

chrome/browser/supervised_user/supervised_user_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 "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/history/history_service_factory.h"
@@ skipping 96 matching lines @@
     supervised_user_service_ =
         SupervisedUserServiceFactory::GetForProfile(profile);
     SupervisedUserSettingsService* supervised_user_settings_service =
         SupervisedUserSettingsServiceFactory::GetForProfile(profile);
     supervised_user_settings_service->SetLocalSetting(
         supervised_users::kContentPackDefaultFilteringBehavior,
         scoped_ptr<base::Value>(
             new base::FundamentalValue(SupervisedUserURLFilter::BLOCK)));
   }
 
-  void SetUpCommandLine(CommandLine* command_line) override {
+  void SetUpCommandLine(base::CommandLine* command_line) override {
     // Enable the test server and remap all URLs to it.
     ASSERT_TRUE(test_server()->Start());
     std::string host_port = test_server()->host_port_pair().ToString();
     command_line->AppendSwitchASCII(switches::kHostResolverRules,
         "MAP *.example.com " + host_port + "," +
         "MAP *.new-example.com " + host_port + "," +
         "MAP *.a.com " + host_port);
 
     command_line->AppendSwitchASCII(switches::kSupervisedUserId, "asdf");
   }
@@ skipping 178 matching lines @@
   scoped_refptr<SupervisedUserURLFilter> filter =
       supervised_user_service_->GetURLFilterForUIThread();
   EXPECT_EQ(SupervisedUserURLFilter::ALLOW,
             filter->GetFilteringBehaviorForURL(test_url.GetWithEmptyPath()));
 
   observer.Wait();
   EXPECT_EQ(test_url, web_contents->GetURL());
 }
 
 }  // namespace