Add custom interstitial for captive portals.

chrome/chrome_tests_unit.gypi

 # Copyright 2012 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': {
     'chrome_unit_tests_sources': [
       '../apps/saved_files_service_unittest.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.cc',
       '../components/autofill/content/renderer/test_password_autofill_agent.h',
       '../components/autofill/content/renderer/test_password_generation_agent.cc',
@@ skipping 727 matching lines @@
       'browser/spellchecker/spellcheck_action_unittest.cc',
       'browser/spellchecker/spellcheck_custom_dictionary_unittest.cc',
       'browser/spellchecker/spellcheck_host_metrics_unittest.cc',
       'browser/spellchecker/spellcheck_message_filter_mac_unittest.cc',
       'browser/spellchecker/spellcheck_message_filter_unittest.cc',
       'browser/spellchecker/spellcheck_platform_mac_unittest.cc',
       'browser/spellchecker/spellcheck_service_unittest.cc',
       'browser/spellchecker/spelling_service_client_unittest.cc',
       'browser/spellchecker/word_trimmer_unittest.cc',
       'browser/ssl/ssl_error_classification_unittest.cc',
+      'browser/ssl/ssl_error_handler_unittest.cc',
       'browser/status_icons/status_icon_menu_model_unittest.cc',
       'browser/status_icons/status_icon_unittest.cc',
       'browser/status_icons/status_tray_unittest.cc',
       'browser/supervised_user/child_accounts/family_info_fetcher_unittest.cc',
       'browser/supervised_user/experimental/supervised_user_async_url_checker_unittest.cc',
       'browser/supervised_user/permission_request_creator_apiary_unittest.cc',
       'browser/supervised_user/supervised_user_pref_mapping_service_unittest.cc',
       'browser/supervised_user/supervised_user_pref_store_unittest.cc',
       'browser/supervised_user/supervised_user_refresh_token_fetcher_unittest.cc',
       'browser/supervised_user/supervised_user_registration_utility_unittest.cc',
@@ skipping 2195 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }