This will require a few days fix up, since the new Settings User list users the  usersPrivate API that does not return the name. (only the email).

Does this bug block anything? When does this need to be fixed by?

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/978d57269a979053a57da3c1fa799eb4ad541cf0

commit 978d57269a979053a57da3c1fa799eb4ad541cf0
Author: tommycli <tommycli@chromium.org>
Date: Mon Aug 22 23:08:52 2016

Settings People CrOS: Display supervised users' names correctly.

This fixes usernames displayed as: 0@locally-managed.localhost in
the ChromeOS User List section of Settings.

BUG= 614583 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2259943003
Cr-Commit-Position: refs/heads/master@{#413567}

[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/browser/chromeos/extensions/users_private/users_private_api.cc
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/browser/resources/settings/people_page/user_list.html
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/browser/resources/settings/people_page/user_list.js
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/browser/resources/settings/people_page/users_page.js
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/common/extensions/api/users_private.idl
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/chrome/test/data/extensions/api_test/users_private/test.js
[modify] https://crrev.com/978d57269a979053a57da3c1fa799eb4ad541cf0/third_party/closure_compiler/externs/users_private.js

Verified on ChromeOS 8872.16.0, 55.0.2883.20