[ios] Implemented iOS analogue of SSLErrorHandler class.

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 33 matching lines @@
     "browser/net/metrics_network_client_unittest.mm",
     "browser/net/retryable_url_fetcher_unittest.mm",
     "browser/passwords/password_controller_unittest.mm",
     "browser/reading_list/reading_list_entry_unittest.cc",
     "browser/reading_list/reading_list_model_unittest.cc",
     "browser/signin/chrome_identity_service_observer_bridge_unittest.mm",
     "browser/signin/gaia_auth_fetcher_ios_unittest.mm",
     "browser/snapshots/lru_cache_unittest.mm",
     "browser/snapshots/snapshot_cache_unittest.mm",
     "browser/snapshots/snapshots_util_unittest.mm",
+
+    # TODO(crbug.com/624450): Add this test back once gn build contains all
+    # needed resources.
+    # "browser/ssl/ios_ssl_error_handler_unittest.mm",
     "browser/translate/translate_service_ios_unittest.cc",
     "browser/ui/commands/set_up_for_testing_command_unittest.mm",
     "browser/ui/context_menu/context_menu_coordinator_unittest.mm",
     "browser/ui/keyboard/UIKeyCommand+ChromeTest.mm",
     "browser/ui/keyboard/hardware_keyboard_watcher_unittest.mm",
     "browser/ui/native_content_controller_unittest.mm",
     "browser/ui/ui_util_unittest.mm",
     "browser/ui/uikit_ui_util_unittest.mm",
     "browser/update_client/ios_chrome_update_query_params_delegate_unittest.cc",
     "browser/web_resource/web_resource_util_unittest.cc",
@@ skipping 32 matching lines @@
     "//net:test_support",
     "//skia",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/gfx:test_support",
   ]
 
   assert_no_deps = ios_assert_no_deps
 }