Move PathIsWritable, DirectoryExists, ContentsEqual, and TextContentsEqual to the base namespace.

chrome/browser/extensions/extension_creator.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/browser/extensions/extension_creator.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 23 matching lines @@
 }
 
 bool ExtensionCreator::InitializeInput(
     const base::FilePath& extension_dir,
     const base::FilePath& crx_path,
     const base::FilePath& private_key_path,
     const base::FilePath& private_key_output_path,
     int run_flags) {
   // Validate input |extension_dir|.
   if (extension_dir.value().empty() ||
-      !file_util::DirectoryExists(extension_dir)) {
+      !base::DirectoryExists(extension_dir)) {
     error_message_ =
         l10n_util::GetStringUTF8(IDS_EXTENSION_DIRECTORY_NO_EXISTS);
     return false;
   }
 
   base::FilePath absolute_extension_dir =
       base::MakeAbsoluteFilePath(extension_dir);
   if (absolute_extension_dir.empty()) {
     error_message_ =
         l10n_util::GetStringUTF8(IDS_EXTENSION_CANT_GET_ABSOLUTE_PATH);
@@ skipping 265 matching lines @@
       SignZip(zip_path, key_pair.get(), &signature) &&
       WriteCRX(zip_path, key_pair.get(), signature, crx_path)) {
     result = true;
   }
 
   base::Delete(zip_path, false);
   return result;
 }
 
 }  // namespace extensions