Move directory creation functions to base namespace.

chrome/browser/extensions/extension_startup_browsertest.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 <vector>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
@@ skipping 42 matching lines @@
       command_line->AppendSwitchNative(switches::kLoadExtension,
                                        paths);
       command_line->AppendSwitch(switches::kDisableExtensionsFileAccessCheck);
     }
   }
 
   virtual bool SetUpUserDataDirectory() OVERRIDE {
     base::FilePath profile_dir;
     PathService::Get(chrome::DIR_USER_DATA, &profile_dir);
     profile_dir = profile_dir.AppendASCII(TestingProfile::kTestUserProfileDir);
-    file_util::CreateDirectory(profile_dir);
+    base::CreateDirectory(profile_dir);
 
     preferences_file_ = profile_dir.AppendASCII("Preferences");
     user_scripts_dir_ = profile_dir.AppendASCII("User Scripts");
     extensions_dir_ = profile_dir.AppendASCII("Extensions");
 
     if (enable_extensions_ && load_extensions_.empty()) {
       base::FilePath src_dir;
       PathService::Get(chrome::DIR_TEST_DATA, &src_dir);
       src_dir = src_dir.AppendASCII("extensions").AppendASCII("good");
 
@@ skipping 197 matching lines @@
         .AppendASCII("extensions")
         .AppendASCII("app2");
     load_extensions_.push_back(fourth_extension_path.value());
   }
 };
 
 IN_PROC_BROWSER_TEST_F(ExtensionsLoadMultipleTest, Test) {
   WaitForServicesToStart(4, true);
   TestInjection(true, true);
 }