Cleanup file permission check code in FileAPIMessageFilter

webkit/fileapi/webkit_fileapi.gypi

 # 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.
 
 {
   'variables': {
     'webkit_fileapi_sources': [
       '../fileapi/file_observers.h',
+      '../fileapi/file_permission_policy.cc',
+      '../fileapi/file_permission_policy.h',
       '../fileapi/file_stream_writer.h',
       '../fileapi/file_system_callback_dispatcher.cc',
       '../fileapi/file_system_callback_dispatcher.h',
       '../fileapi/file_system_context.cc',
       '../fileapi/file_system_context.h',
       '../fileapi/file_system_dir_url_request_job.cc',
       '../fileapi/file_system_dir_url_request_job.h',
       '../fileapi/file_system_directory_database.cc',
       '../fileapi/file_system_directory_database.h',
       '../fileapi/file_system_file_stream_reader.cc',
@@ skipping 103 matching lines @@
     ],
     'webkit_fileapi_media_sources': [
       '../fileapi/media/device_media_file_util.cc',
       '../fileapi/media/device_media_file_util.h',
       '../fileapi/media/mtp_device_delegate.h',
       '../fileapi/media/mtp_device_map_service.cc',
       '../fileapi/media/mtp_device_map_service.h',
     ],
   },
 }