GitLab

Add UI support for alphanumeric pins used on user login via
smart cards.

Previously, Latin letters were consciously ignored.
Also added a unit test for non-digit pin inputs.

Bug: 1144194

Change-Id: I556f1fd8a07fa1a8a1d76130ee116c3a0e86e2b7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518976Reviewed-by: Fabian Sommer <fabiansommer@chromium.org>
Reviewed-by: Denis Kuznetsov [CET] <antrim@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Aya Nader Elgendy‎ <ayag@chromium.org>
Cr-Commit-Position: refs/heads/master@{#826492}