Make FileSystemOperation's lifetime more explicit.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 1635 matching lines @@
         'browser/fav_icon_helper.h',
         'browser/favicon_service.cc',
         'browser/favicon_service.h',
         'browser/file_path_watcher.cc',
         'browser/file_path_watcher.h',
         'browser/file_path_watcher_inotify.cc',
         'browser/file_path_watcher_mac.cc',
         'browser/file_path_watcher_win.cc',
         'browser/file_select_helper.cc',
         'browser/file_select_helper.h',
-        'browser/file_system/browser_file_system_callback_dispatcher.cc',
-        'browser/file_system/browser_file_system_callback_dispatcher.h',
         'browser/file_system/browser_file_system_context.cc',
         'browser/file_system/browser_file_system_context.h',
         'browser/file_system/file_system_dispatcher_host.cc',
         'browser/file_system/file_system_dispatcher_host.h',
         'browser/find_bar.h',
         'browser/find_bar_controller.cc',
         'browser/find_bar_controller.h',
         'browser/find_bar_state.h',
         'browser/find_bar_state.cc',
         'browser/find_notification_details.h',
@@ skipping 2698 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: