The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3bc9091571357eae3bf48984edf6c3a265633636

commit 3bc9091571357eae3bf48984edf6c3a265633636
Author: Tim Song <tengs@chromium.org>
Date: Thu Jul 13 02:22:20 2017

[EasyUnlock] Remove double reauth with setting up EasyUnlock.

With the new ChromeOS settings page, accessing the lock screen settings requires
the user to reauth with their password. This obsoletes the previous behaviour of
reauthing specifically for EasyUnlock.

BUG= 740290 

Change-Id: I4788e81a750fb36217a4de3bff8e1e5505985bc2
Reviewed-on: https://chromium-review.googlesource.com/565778
Commit-Queue: Tim Song <tengs@chromium.org>
Reviewed-by: Toni Barzic <tbarzic@chromium.org>
Reviewed-by: Gustavo Sacomoto <sacomoto@chromium.org>
Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Jacob Dufault <jdufault@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486225}
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api.cc
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/chromeos/extensions/quick_unlock_private/quick_unlock_private_api_unittest.cc
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/signin/easy_unlock_service.cc
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/signin/easy_unlock_service.h
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/signin/easy_unlock_service_regular.cc
[modify] https://crrev.com/3bc9091571357eae3bf48984edf6c3a265633636/chrome/browser/signin/easy_unlock_service_regular.h

Is this fixed? Do still need to do something else here?

Nope, this is all done :)