Start removing deprecated Options UI code

chrome/test/data/webui/BUILD.gn

 # Copyright 2017 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.
 
 import("//chrome/common/features.gni")
 import("//chrome/test/base/js2gtest.gni")
 
 js2gtest("interactive_ui_tests_js_webui") {
   test_type = "webui"
 
@@ skipping 30 matching lines @@
     "../../../browser/ui/webui/extensions/chromeos/kiosk_apps_browsertest.js",
     "../../../browser/ui/webui/extensions/extension_settings_browsertest.js",
     "../../../browser/ui/webui/help/help_browsertest.js",
     "../../../browser/ui/webui/identity_internals_ui_browsertest.js",
     "../../../browser/ui/webui/options/autofill_options_browsertest.js",
     "../../../browser/ui/webui/options/browser_options_browsertest.js",
     "../../../browser/ui/webui/options/certificate_manager_browsertest.js",
     "../../../browser/ui/webui/options/chromeos/accounts_options_browsertest.js",
     "../../../browser/ui/webui/options/chromeos/bluetooth_options_browsertest.js",
     "../../../browser/ui/webui/options/chromeos/date_time_options_browsertest.js",
-    "../../../browser/ui/webui/options/chromeos/guest_mode_options_browsertest.js",
     "../../../browser/ui/webui/options/chromeos/power_overlay_browsertest.js",
     "../../../browser/ui/webui/options/content_options_browsertest.js",
     "../../../browser/ui/webui/options/content_settings_exception_area_browsertest.js",
     "../../../browser/ui/webui/options/cookies_view_browsertest.js",
     "../../../browser/ui/webui/options/edit_dictionary_browsertest.js",
     "../../../browser/ui/webui/options/font_settings_browsertest.js",
     "../../../browser/ui/webui/options/language_options_browsertest.js",
     "../../../browser/ui/webui/options/language_options_dictionary_download_browsertest.js",
     "../../../browser/ui/webui/options/manage_profile_browsertest.js",
     "../../../browser/ui/webui/options/multilanguage_options_webui_browsertest.js",
@@ skipping 121 matching lines @@
       "../../../browser/resources/chromeos/braille_ime/braille_ime_unittest.gtestjs",
       "../../../browser/resources/chromeos/select_to_speak/select_to_speak_unittest.gtestjs",
     ]
     extra_js_files += [
       "../../../browser/resources/chromeos/braille_ime/braille_ime.js",
       "../../../browser/resources/chromeos/select_to_speak/select_to_speak.js",
       "../../../browser/resources/chromeos/select_to_speak/test_support.js",
     ]
   }
 }