Notify SystemURLRequestContextGetter before shutdown on iOS.

ios/chrome/BUILD.gn

 # Copyright 2015 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("//build/config/ios/rules.gni")
 import("//ios/build/config.gni")
 import("//testing/test.gni")
 
 bundle_data("ios_chrome_unittests_bundle_data") {
   testonly = true
@@ skipping 23 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/passwords/credential_manager_js_unittest.mm",
@@ skipping 38 matching lines @@
     "//components/autofill/core/common:common",
     "//components/autofill/ios/browser:browser",
     "//components/bookmarks/test",
     "//components/favicon_base",
     "//components/metrics",
     "//components/metrics:test_support",
     "//components/password_manager/core/browser",
     "//components/password_manager/core/browser:test_support",
     "//components/password_manager/core/common",
     "//components/prefs:test_support",
+    "//components/proxy_config:proxy_config",
     "//components/signin/core/browser:test_support",
     "//components/signin/ios/browser:test_support",
+    "//components/ssl_config:ssl_config",
     "//components/sync_driver:test_support",
     "//components/syncable_prefs:test_support",
     "//components/update_client",
     "//components/version_info",
     "//ios/chrome/app",
     "//ios/chrome/app/resources:packed_resources",
     "//ios/chrome/browser",
     "//ios/chrome/browser:test_support",
     "//ios/chrome/common",
     "//ios/chrome/test",
     "//ios/chrome/test:run_all_unittests",
     "//ios/public/provider/chrome/browser",
     "//ios/public/provider/chrome/browser:test_support",
     "//ios/testing:ocmock_support",
     "//ios/web",
     "//ios/web:test_support",
     "//net:test_support",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/google_toolbox_for_mac",
     "//third_party/ocmock",
     "//ui/base:base",
     "//ui/gfx:test_support",
     "//ui/strings:ui_strings",
   ]
 
   assert_no_deps = ios_assert_no_deps
 }