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

chrome/browser/policy/cloud/resource_cache.cc

 // Copyright (c) 2013 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/policy/cloud/resource_cache.h"
 
 #include "base/base64.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/logging.h"
@@ skipping 136 matching lines @@
 }
 
 bool ResourceCache::VerifyKeyPath(const std::string& key,
                                   bool allow_create,
                                   base::FilePath* path) {
   std::string encoded;
   if (!Base64Encode(key, &encoded))
     return false;
   *path = cache_dir_.AppendASCII(encoded);
   return allow_create ? file_util::CreateDirectory(*path) :
-                        file_util::DirectoryExists(*path);
+                        base::DirectoryExists(*path);
 }
 
 bool ResourceCache::VerifyKeyPathAndGetSubkeyPath(const std::string& key,
                                                   bool allow_create_key,
                                                   const std::string& subkey,
                                                   base::FilePath* path) {
   base::FilePath key_path;
   std::string encoded;
   if (!VerifyKeyPath(key, allow_create_key, &key_path) ||
       !Base64Encode(subkey, &encoded)) {
     return false;
   }
   *path = key_path.AppendASCII(encoded);
   return true;
 }
 
 
 }  // namespace policy