Remove obsolete UserSettings class

chrome/chrome.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
 
     'variables': {
       'version_py_path': 'tools/build/version.py',
       'version_path': 'VERSION',
@@ skipping 477 matching lines @@
         'browser/sync/util/nigori.cc',
         'browser/sync/util/nigori.h',
         'browser/sync/util/oauth.cc',
         'browser/sync/util/oauth.h',
         'browser/sync/util/sqlite_utils.cc',
         'browser/sync/util/sqlite_utils.h',
         'browser/sync/util/time.cc',
         'browser/sync/util/time.h',
         'browser/sync/util/unrecoverable_error_info.h',
         'browser/sync/util/unrecoverable_error_info.cc',
-        'browser/sync/util/user_settings.cc',
-        'browser/sync/util/user_settings.h',
-        'browser/sync/util/user_settings_posix.cc',
-        'browser/sync/util/user_settings_win.cc',
         'browser/sync/util/weak_handle.cc',
         'browser/sync/util/weak_handle.h',
       ],
       'include_dirs': [
         '..',
       ],
       'defines' : [
         'SYNC_ENGINE_VERSION_STRING="Unknown"',
         '_CRT_SECURE_NO_WARNINGS',
         '_USE_32BIT_TIME_T',
@@ skipping 806 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ]},  # 'targets'
     ],  # OS=="win"
   ],  # 'conditions'
 }