Clarify settings UI in multi-profiles mode

chrome/chrome_tests.gypi

 # Copyright 2013 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' : {
     'chromedriver_unittest_sources': [
       'test/chromedriver/capabilities_unittest.cc',
       'test/chromedriver/chrome/chrome_finder_unittest.cc',
       'test/chromedriver/chrome/console_logger_unittest.cc',
       'test/chromedriver/chrome/device_manager_unittest.cc',
@@ skipping 1514 matching lines @@
         'browser/ui/webui/ntp/new_tab_page_sync_handler_browsertest.cc',
         'browser/ui/webui/ntp/new_tab_ui_browsertest.cc',
         'browser/ui/webui/options/autofill_options_browsertest.js',
         'browser/ui/webui/options/browser_options_browsertest.js',
         'browser/ui/webui/options/certificate_manager_browsertest.cc',
         'browser/ui/webui/options/certificate_manager_browsertest.js',
         'browser/ui/webui/options/chromeos/accounts_options_browsertest.cc',
         'browser/ui/webui/options/chromeos/accounts_options_browsertest.js',
         'browser/ui/webui/options/chromeos/bluetooth_options_browsertest.js',
         'browser/ui/webui/options/chromeos/guest_mode_options_ui_browsertest.cc',
+        'browser/ui/webui/options/chromeos/shared_options_browsertest.cc',
         '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/options_browsertest.cc',
         'browser/ui/webui/options/options_browsertest.js',
@@ skipping 1667 matching lines @@
             'utility',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
           ],
         }]
     }],
   ],  # 'conditions'
 }