Adding `browsing_data_filesystem_helper*` as the first step towards content settings UI.

chrome/chrome_browser.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 304 matching lines @@
         'browser/browser_trial.cc',
         'browser/browser_trial.h',
         'browser/browser_url_handler.cc',
         'browser/browser_url_handler.h',
         'browser/browser_util_win.cc',
         'browser/browser_util_win.h',
         'browser/browsing_data_appcache_helper.cc',
         'browser/browsing_data_appcache_helper.h',
         'browser/browsing_data_database_helper.cc',
         'browser/browsing_data_database_helper.h',
+        'browser/browsing_data_file_system_helper.cc',
+        'browser/browsing_data_file_system_helper.h',
         'browser/browsing_data_indexed_db_helper.cc',
         'browser/browsing_data_indexed_db_helper.h',
         'browser/browsing_data_local_storage_helper.cc',
         'browser/browsing_data_local_storage_helper.h',
         'browser/browsing_data_remover.cc',
         'browser/browsing_data_remover.h',
         'browser/bug_report_data.cc',
         'browser/bug_report_data.h',
         'browser/bug_report_util.cc',
         'browser/bug_report_util.h',
@@ skipping 4241 matching lines @@
       'hard_dependency': 1,
     },
   ],
 }
 
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 # tab-width:2
 # indent-tabs-mode:nil
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