The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2

commit 1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2
Author: Roman Sorokin <rsorokin@chromium.org>
Date: Tue Aug 08 12:13:11 2017

Chromad: Do not allow supervised users on AD devices.

Moves checks about supervised user into *user_manager*.
Makes sure realm "locally-managed.localhost" is not
detected as supervised domain on Active Directory devices

Bug:  704901 
Test: ActiveDirectoryLoginTest.*
Change-Id: I01bd09e11d292c9ef9310e780b9774481a750209
Reviewed-on: https://chromium-review.googlesource.com/543342
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Roman Sorokin <rsorokin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#492600}
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/extensions/users_private/users_private_api.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/login/existing_user_controller.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/login/login_browsertest.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/login/users/chrome_user_manager_impl.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/login/users/fake_chrome_user_manager.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/chromeos/login/users/supervised_user_manager_impl.cc
[modify] https://crrev.com/1f43178c5d1ba8d4b35841b21ad02d3ec75ed0f2/chrome/browser/ui/webui/options/chromeos/accounts_options_handler.cc

Marked this as "Verified" since Supervised users can't be created or edited (https://support.google.com/chrome/answer/3463947) and lack of the issues with Chromad enrollment.