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

chrome/browser/ui/metro_pin_tab_helper_win.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 "chrome/browser/ui/metro_pin_tab_helper_win.h"
 
 #include <set>
 
 #include "base/base_paths.h"
 #include "base/bind.h"
@@ skipping 39 matching lines @@
   return UTF8ToUTF16(hash_str);
 }
 
 // Get the path of the directory to store the tile logos in.
 base::FilePath GetTileImagesDir() {
   base::FilePath tile_images_dir;
   if (!PathService::Get(chrome::DIR_USER_DATA, &tile_images_dir))
     return base::FilePath();
 
   tile_images_dir = tile_images_dir.Append(L"TileImages");
-  if (!file_util::DirectoryExists(tile_images_dir) &&
+  if (!base::DirectoryExists(tile_images_dir) &&
       !file_util::CreateDirectory(tile_images_dir))
     return base::FilePath();
 
   return tile_images_dir;
 }
 
 // For the given |image| and |tile_id|, try to create a site specific logo in
 // |logo_dir|. The path of any created logo is returned in |logo_path|. Return
 // value indicates whether a site specific logo was created.
 bool CreateSiteSpecificLogo(const SkBitmap& bitmap,
@@ skipping 383 matching lines @@
 
   GURL url = web_contents()->GetURL();
   string16 tile_id = GenerateTileId(UTF8ToUTF16(url.spec()));
   metro_un_pin_from_start_screen(tile_id,
                                  base::Bind(&PinPageReportUmaCallback));
 }
 
 void MetroPinTabHelper::FaviconDownloaderFinished() {
   favicon_chooser_.reset();
 }