Remove wstring file path helpers from test_file_util.

base/test/test_file_util_posix.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 "base/test/test_file_util.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 
-using base::MakeAbsoluteFilePath;
-
 namespace base {
 
 namespace {
 
 // Deny |permission| on the file |path|.
 bool DenyFilePermission(const FilePath& path, mode_t permission) {
   struct stat stat_buf;
   if (stat(path.value().c_str(), &stat_buf) != 0)
     return false;
   stat_buf.st_mode &= ~permission;
@@ skipping 56 matching lines @@
 #endif
 
 }  // namespace base
 
 namespace file_util {
 
 using base::DenyFilePermission;
 using base::GetPermissionInfo;
 using base::RestorePermissionInfo;
 
-std::wstring FilePathAsWString(const base::FilePath& path) {
-  return base::UTF8ToWide(path.value());
-}
-base::FilePath WStringAsFilePath(const std::wstring& path) {
-  return base::FilePath(base::WideToUTF8(path));
-}
-
 bool MakeFileUnreadable(const base::FilePath& path) {
   return DenyFilePermission(path, S_IRUSR | S_IRGRP | S_IROTH);
 }
 
 bool MakeFileUnwritable(const base::FilePath& path) {
   return DenyFilePermission(path, S_IWUSR | S_IWGRP | S_IWOTH);
 }
 
 PermissionRestorer::PermissionRestorer(const base::FilePath& path)
     : path_(path), info_(NULL), length_(0) {
   info_ = GetPermissionInfo(path_, &length_);
   DCHECK(info_ != NULL);
   DCHECK_NE(0u, length_);
 }
 
 PermissionRestorer::~PermissionRestorer() {
   if (!RestorePermissionInfo(path_, info_, length_))
     NOTREACHED();
 }
 
 }  // namespace file_util