The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8

commit 7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8
Author: Aga Wronska <agawronska@chromium.org>
Date: Tue Feb 20 18:07:52 2018

demo mode: Add feature flag and keycombo for demo mode.

--enable-demo-mode switch turns on new demo mode feature that is under
development.
Ctrl+Alt+D shortcut opens new demo mode setup flow from OOBE (sign in screen).
It is used for development and might change in the future.

Change-Id: Ie3c0d954cd7d3d82f030873b9472debb1ebb2a1d
Bug:  812460 
Reviewed-on: https://chromium-review.googlesource.com/914846
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Aga Wronska <agawronska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537820}
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/chrome/browser/chromeos/login/ui/webui_login_view.cc
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/chrome/browser/ui/webui/chromeos/login/core_oobe_handler.cc
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/chrome/browser/ui/webui/chromeos/login/core_oobe_handler.h
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/chromeos/chromeos_switches.cc
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/chromeos/chromeos_switches.h
[modify] https://crrev.com/7fa0c20bef4df9dd9810ca6b3bb2f4148e628df8/ui/login/display_manager.js

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/9b9c97dfe8c897fcc463f179baef5df5105c8ff5

commit 9b9c97dfe8c897fcc463f179baef5df5105c8ff5
Author: Aga Wronska <agawronska@chromium.org>
Date: Thu Mar 08 23:04:18 2018

demo mode: Create Web UI entry point for the development of demo mode setup flow.

This UI allows user to initiate desired demo mode setup flow. It is shown as a
part of OOBE experience. It can be triggered by using keycombo on
'Sign in' screen. Some settings (locale, network) chosen during OOBE are
relevant for the demo mode setup.

UI will be updated when the final design and mocks are provided.

Bug:  812460 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: Ifccdb37a3cb8364fa1b247ef30caa552bb858491
Reviewed-on: https://chromium-review.googlesource.com/932914
Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Aga Wronska <agawronska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#541921}
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/BUILD.gn
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/app_launch_signin_screen.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/app_launch_signin_screen.h
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/demo_setup_browsertest.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/existing_user_controller.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/existing_user_controller.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/lock/webui_screen_locker.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/lock/webui_screen_locker.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/oobe_screen.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/oobe_screen.h
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/demo_setup_screen.cc
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/demo_setup_screen.h
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/demo_setup_screen_view.cc
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/demo_setup_screen_view.h
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/mock_demo_setup_screen.cc
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/mock_demo_setup_screen.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/screen_exit_code.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/screens/screen_exit_code.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/ui/login_display.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/ui/login_display_webui.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/ui/login_display_webui.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/wizard_controller.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/wizard_controller.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/chromeos/login/wizard_controller_browsertest.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/custom_elements_login.html
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/custom_elements_login.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/custom_elements_oobe.html
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/custom_elements_oobe.js
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/demo_setup.css
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/demo_setup.html
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/demo_setup.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/login.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/login_non_lock_shared.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/login_screens.html
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/md_login.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/md_login_screens.html
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/oobe.js
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/oobe_screen_demo_setup.html
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/oobe_screen_demo_setup.js
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/resources/chromeos/login/oobe_screens.html
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/BUILD.gn
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/core_oobe_handler.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/core_oobe_handler.h
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/demo_setup_screen_handler.cc
[add] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/demo_setup_screen_handler.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/oobe_ui.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/oobe_ui.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.cc
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/chrome/test/BUILD.gn
[modify] https://crrev.com/9b9c97dfe8c897fcc463f179baef5df5105c8ff5/ui/login/display_manager.js