Notify SystemURLRequestContextGetter before shutdown on iOS.

ios/chrome/ios_chrome_tests.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': [
     {
       # GN version: //ios/chrome:ios_chrome_unittests
       'target_name': 'ios_chrome_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../base/base.gyp:test_support_base',
         '../../components/components.gyp:bookmarks_test_support',
         '../../components/components.gyp:favicon_base',
         '../../components/components.gyp:metrics',
         '../../components/components.gyp:metrics_test_support',
         '../../components/components.gyp:password_manager_core_browser',
         '../../components/components.gyp:password_manager_core_browser_test_support',
         '../../components/components.gyp:password_manager_core_common',
+        '../../components/components.gyp:proxy_config',
+        '../../components/components.gyp:ssl_config',
         '../../components/components.gyp:syncable_prefs_test_support',
         '../../components/components.gyp:update_client',
         '../../components/components.gyp:version_info',
         '../../components/prefs/prefs.gyp:prefs_test_support',
         '../../ios/testing/ios_testing.gyp:ocmock_support',
         '../../net/net.gyp:net_test_support',
         '../../skia/skia.gyp:skia',
         '../../testing/gmock.gyp:gmock',
         '../../testing/gtest.gyp:gtest',
         '../../third_party/google_toolbox_for_mac/google_toolbox_for_mac.gyp:google_toolbox_for_mac',
@@ skipping 16 matching lines @@
         'app/application_delegate/memory_warning_helper_unittest.mm',
         'app/safe_mode_util_unittest.cc',
         'browser/chrome_url_util_unittest.mm',
         'browser/crash_loop_detection_util_unittest.mm',
         'browser/favicon/large_icon_cache_unittest.cc',
         'browser/geolocation/CLLocation+XGeoHeaderTest.mm',
         'browser/geolocation/location_manager_unittest.mm',
         'browser/geolocation/omnibox_geolocation_local_state_unittest.mm',
         'browser/install_time_util_unittest.mm',
         'browser/installation_notifier_unittest.mm',
+        'browser/ios_chrome_io_thread_unittest.mm',
         'browser/itunes_links/itunes_links_observer_unittest.mm',
         'browser/metrics/ios_chrome_metrics_service_accessor_unittest.cc',
         'browser/metrics/ios_chrome_stability_metrics_provider_unittest.cc',
         'browser/metrics/mobile_session_shutdown_metrics_provider_unittest.mm',
         'browser/metrics/previous_session_info_unittest.mm',
         'browser/net/cookie_util_unittest.mm',
         'browser/net/image_fetcher_unittest.mm',
         'browser/net/metrics_network_client_unittest.mm',
         'browser/net/retryable_url_fetcher_unittest.mm',
         'browser/notification_promo_unittest.cc',
@@ skipping 95 matching lines @@
         'test/ios_chrome_scoped_testing_local_state.h',
         'test/ios_chrome_unit_test_suite.h',
         'test/ios_chrome_unit_test_suite.mm',
         'test/run_all_unittests.cc',
         'test/testing_application_context.h',
         'test/testing_application_context.mm',
       ],
     },
   ],
 }