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

net/base/directory_lister.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 "net/base/directory_lister.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 125 matching lines @@
   return base::WorkerPool::PostTask(
       FROM_HERE, base::Bind(&Core::StartInternal, this), true);
 }
 
 void DirectoryLister::Core::Cancel() {
   lister_ = NULL;
 }
 
 void DirectoryLister::Core::StartInternal() {
 
-  if (!file_util::DirectoryExists(dir_)) {
+  if (!base::DirectoryExists(dir_)) {
     origin_loop_->PostTask(
         FROM_HERE,
         base::Bind(&DirectoryLister::Core::OnDone, this, ERR_FILE_NOT_FOUND));
     return;
   }
 
   int types = base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES;
   if (!recursive_)
     types |= base::FileEnumerator::INCLUDE_DOT_DOT;
 
@@ skipping 49 matching lines @@
 
 void DirectoryLister::OnReceivedData(const DirectoryListerData& data) {
   delegate_->OnListFile(data);
 }
 
 void DirectoryLister::OnDone(int error) {
   delegate_->OnListDone(error);
 }
 
 }  // namespace net