Unframe chrome://extensions as it's the last (and only) uber item

chrome/test/data/webui/BUILD.gn

 # Copyright 2017 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("//chrome/common/features.gni")
 import("//chrome/test/base/js2gtest.gni")
 
 js2gtest("interactive_ui_tests_js_webui") {
   test_type = "webui"
 
@@ skipping 22 matching lines @@
   # Javascript sources. These are combined with the .cc files in the GYP build
   # and are handled by a rule, but in the GN build they're in a separate
   # action so need to be separated out.
   sources = [
     "../../../browser/ui/webui/app_list/start_page_browsertest.js",
     "../../../browser/ui/webui/chromeos/bluetooth_pairing_ui_browsertest.js",
     "../../../browser/ui/webui/chromeos/certificate_manager_dialog_browsertest.js",
     "../../../browser/ui/webui/chromeos/set_time_ui_browsertest.js",
     "../../../browser/ui/webui/extensions/chromeos/kiosk_apps_browsertest.js",
     "../../../browser/ui/webui/extensions/extension_settings_browsertest.js",
-    "../../../browser/ui/webui/help/help_browsertest.js",
     "../../../browser/ui/webui/identity_internals_ui_browsertest.js",
     "../../../browser/ui/webui/sync_internals_browsertest.js",
     "../../../browser/ui/webui/sync_setup_browsertest.js",
     "../chromeos/oobe_webui_browsertest.js",
     "about_invalidations_browsertest.js",
     "accessibility_audit_browsertest.js",
     "assertions.js",
     "async_gen.js",
     "bluetooth_internals_browsertest.js",
     "certificate_viewer_dialog_test.js",
@@ skipping 93 matching lines @@
       "../../../browser/resources/chromeos/braille_ime/braille_ime_unittest.gtestjs",
       "../../../browser/resources/chromeos/select_to_speak/select_to_speak_unittest.gtestjs",
     ]
     extra_js_files += [
       "../../../browser/resources/chromeos/braille_ime/braille_ime.js",
       "../../../browser/resources/chromeos/select_to_speak/select_to_speak.js",
       "../../../browser/resources/chromeos/select_to_speak/test_support.js",
     ]
   }
 }