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

base/files/scoped_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 "base/files/scoped_temp_dir.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 
 namespace base {
@@ skipping 34 matching lines @@
           &path_))
     return false;
 
   return true;
 }
 
 bool ScopedTempDir::Set(const FilePath& path) {
   if (!path_.empty())
     return false;
 
-  if (!file_util::DirectoryExists(path) &&
-      !file_util::CreateDirectory(path))
+  if (!DirectoryExists(path) && !file_util::CreateDirectory(path))
     return false;
 
   path_ = path;
   return true;
 }
 
 bool ScopedTempDir::Delete() {
   if (path_.empty())
     return false;
 
   bool ret = base::Delete(path_, true);
   if (ret) {
     // We only clear the path if deleted the directory.
     path_.clear();
   }
 
   return ret;
 }
 
 FilePath ScopedTempDir::Take() {
   FilePath ret = path_;
   path_ = FilePath();
   return ret;
 }
 
 bool ScopedTempDir::IsValid() const {
-  return !path_.empty() && file_util::DirectoryExists(path_);
+  return !path_.empty() && DirectoryExists(path_);
 }
 
 }  // namespace base