Adding a TouchFile() operation.

chrome/common/file_system/file_system_dispatcher.h

 // Copyright (c) 2010 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 CHROME_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_
 #define CHROME_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 34 matching lines @@
   bool Create(const FilePath& path,
               bool exclusive,
               bool is_directory,
               bool recursive,
               fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Exists(const FilePath& path,
               bool for_directory,
               fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool ReadDirectory(const FilePath& path,
                      fileapi::FileSystemCallbackDispatcher* dispatcher);
+  bool TouchFile(const FilePath& file_path,
+                 const base::Time& last_access_time,
+                 const base::Time& last_modified_time,
+                 fileapi::FileSystemCallbackDispatcher* dispatcher);
 
  private:
   void DidSucceed(int request_id);
   void DidReadMetadata(int request_id,
                        const base::PlatformFileInfo& file_info);
   void DidReadDirectory(
       int request_id,
       const std::vector<base::file_util_proxy::Entry>& entries,
       bool has_more);
   void DidFail(int request_id, base::PlatformFileError error_code);
 
   IDMap<fileapi::FileSystemCallbackDispatcher, IDMapOwnPointer> dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDispatcher);
 };
 
 #endif  // CHROME_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_