Move directory creation functions to base namespace.

chrome/utility/extensions/unpacker.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 "chrome/utility/extensions/unpacker.h"
 
 #include <set>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
@@ skipping 152 matching lines @@
   return true;
 }
 
 bool Unpacker::Run() {
   DVLOG(1) << "Installing extension " << extension_path_.value();
 
   // <profile>/Extensions/CRX_INSTALL
   temp_install_dir_ =
       extension_path_.DirName().AppendASCII(kTempExtensionName);
 
-  if (!file_util::CreateDirectory(temp_install_dir_)) {
+  if (!base::CreateDirectory(temp_install_dir_)) {
     SetUTF16Error(
         l10n_util::GetStringFUTF16(
             IDS_EXTENSION_PACKAGE_DIRECTORY_ERROR,
             base::i18n::GetDisplayStringInLTRDirectionality(
                 temp_install_dir_.LossyDisplayName())));
     return false;
   }
 
   if (!zip::Unzip(extension_path_, temp_install_dir_)) {
     SetUTF16Error(l10n_util::GetStringUTF16(IDS_EXTENSION_PACKAGE_UNZIP_ERROR));
@@ skipping 137 matching lines @@
 
 void Unpacker::SetError(const std::string &error) {
   SetUTF16Error(UTF8ToUTF16(error));
 }
 
 void Unpacker::SetUTF16Error(const string16 &error) {
   error_message_ = error;
 }
 
 }  // namespace extensions