Add FileUtileHelper

webkit/fileapi/file_system_file_util_proxy.h

 // 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.
 
 #ifndef WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
 #define WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 33 matching lines @@
                               bool created
                               )> EnsureFileExistsCallback;
   typedef base::Callback<void(PlatformFileError status,
                               const PlatformFileInfo& info,
                               const FilePath& platform_path
                               )> GetFileInfoCallback;
   typedef base::Callback<void(PlatformFileError,
                               const std::vector<Entry>&,
                               bool has_more)> ReadDirectoryCallback;
 
-  // Deletes a file or a directory by calling |file_util|'s
-  // Delete method on the given |message_loop_proxy|.
+  // Deletes a file or a directory on the given |message_loop_proxy|.
+  // It is an error to delete a non-empty directory with recursive=false.
   static bool Delete(
       MessageLoopProxy* message_loop_proxy,
       FileSystemOperationContext* context,
       FileSystemFileUtil* file_util,
       const FileSystemPath& path,
       bool recursive,
       const StatusCallback& callback);
 
   // Creates or opens a file with the given flags by calling |file_util|'s
   // CreateOrOpen method on the given |message_loop_proxy|.
@@ skipping 101 matching lines @@
       int64 length,
       const StatusCallback& callback);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(FileSystemFileUtilProxy);
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_FILEAPI_FILE_SYSTEM_FILE_UTIL_PROXY_H_