[Upstream] Force instantiation of BSKSF during unit tests

ios/chrome/ios_chrome.gyp

 # Copyright 2014 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,
    },
   'targets': [
     {
@@ skipping 80 matching lines @@
         'browser/autofill/form_input_accessory_view_controller.mm',
         'browser/autofill/form_input_accessory_view_delegate.h',
         'browser/autofill/form_suggestion_controller.h',
         'browser/autofill/form_suggestion_controller.mm',
         'browser/autofill/form_suggestion_label.h',
         'browser/autofill/form_suggestion_label.mm',
         'browser/autofill/form_suggestion_provider.h',
         'browser/autofill/form_suggestion_view.h',
         'browser/autofill/form_suggestion_view.mm',
         'browser/autofill/form_suggestion_view_client.h',
+        'browser/browser_state/browser_state_keyed_service_factories.h',
+        'browser/browser_state/browser_state_keyed_service_factories.mm',
         'browser/browser_state/browser_state_otr_helper.cc',
         'browser/browser_state/browser_state_otr_helper.h',
         'browser/browsing_data_change_listening.h',
         'browser/chrome_paths.h',
         'browser/chrome_paths.mm',
         'browser/chrome_switches.cc',
         'browser/chrome_switches.h',
         'browser/chrome_url_constants.cc',
         'browser/chrome_url_constants.h',
         'browser/dom_distiller/distiller_viewer.cc',
@@ skipping 168 matching lines @@
         '../../ios/web/js_compile.gypi',
       ],
       'link_settings': {
         'mac_bundle_resources': [
           '<(SHARED_INTERMEDIATE_DIR)/find_in_page.js',
         ],
       },
     },
   ],
 }