[Refactor] to rename and re-layer the file_util stack layers.

webkit/fileapi/file_system_path_manager.h

 // 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.
 
 #ifndef WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_
 #pragma once
 
 #include "base/callback_old.h"
 #include "base/file_path.h"
@@ skipping 60 matching lines @@
 
   // Checks if a given |name| contains any restricted names/chars in it.
   bool IsRestrictedFileName(FileSystemType type,
                             const FilePath& filename);
 
   // Checks if an origin has access to a particular filesystem type and
   // file element represented by |virtual_path|.
   bool IsAccessAllowed(const GURL& origin, FileSystemType type,
                        const FilePath& virtual_path);
 
-  FileSystemFileUtil* GetFileSystemFileUtil(FileSystemType type) const;
+  FileSystemFileUtil* GetFileUtil(FileSystemType type) const;
 
   SandboxMountPointProvider* sandbox_provider() const {
     return sandbox_provider_.get();
   }
 
   ExternalFileSystemMountPointProvider* external_provider() const {
     return external_provider_.get();
   }
 
   bool is_incognito() const {
     return is_incognito_;
   }
 
  private:
   const bool is_incognito_;
   const bool allow_file_access_from_files_;
   scoped_ptr<SandboxMountPointProvider> sandbox_provider_;
   scoped_ptr<ExternalFileSystemMountPointProvider> external_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemPathManager);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_PATH_MANAGER_H_