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

chrome/installer/util/self_cleaning_temp_dir.cc

 // Copyright (c) 2011 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/installer/util/self_cleaning_temp_dir.h"
 
 #include <windows.h>
 
 #include "base/file_util.h"
 #include "base/logging.h"
@@ skipping 12 matching lines @@
 
   if (base::PathExists(temp_parent_dir)) {
     // Empty base_dir means that we didn't create any extra directories.
     base_dir->clear();
   } else {
     base::FilePath parent_dir(temp_parent_dir);
     do {
       *base_dir = parent_dir;
       parent_dir = parent_dir.DirName();
     } while (parent_dir != *base_dir && !base::PathExists(parent_dir));
-    LOG_IF(WARNING, !file_util::DirectoryExists(parent_dir))
+    LOG_IF(WARNING, !base::DirectoryExists(parent_dir))
         << "A non-directory is at the base of the path leading to a desired "
            "temp directory location: " << parent_dir.value();
   }
 }
 
 SelfCleaningTempDir::SelfCleaningTempDir() {
 }
 
 SelfCleaningTempDir::~SelfCleaningTempDir() {
   if (!path().empty() && !Delete())
@@ skipping 65 matching lines @@
     } while (true);
   }
 
   base_dir_.clear();
   temp_dir_.clear();
 
   return true;
 }
 
 }  // namespace installer