Demo UI made with a help of WUG toolkit (DO NOT SEND TO CQ).

components/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 import("//tools/grit/repack.gni")
 
 # Collection of all components. You wouldn't link to this, but this is rather
@@ skipping 14 matching lines @@
     "//components/cdm/browser",
     "//components/cdm/common",
     "//components/cdm/renderer",
     "//components/cloud_devices/common",
     "//components/component_updater",
     "//components/content_settings/core/browser",
     "//components/content_settings/core/common",
     "//components/crash/app",
     "//components/crash/browser",
     "//components/crx_file",
+    "//components/demo_ui",
     "//components/data_reduction_proxy/core/browser",
     "//components/data_reduction_proxy/core/common",
     "//components/device_event_log",
     "//components/dom_distiller/core",
     "//components/domain_reliability",
     "//components/enhanced_bookmarks",
     "//components/favicon/core",
     "//components/favicon_base",
     "//components/feedback",
     "//components/gcm_driver",
@@ skipping 255 matching lines @@
 
   output = "$root_out_dir/components_tests_resources.pak"
 
   deps = [
     "//components/resources",
     "//components/strings",
     "//ui/resources",
     "//ui/strings",
   ]
 }