GitLab

Add a11y string for the upcoming PIN field on the
login screen.

Bug: 1075994
Change-Id: I239add7de17c464191e6b0294e58f615e8a90945
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2349868
Auto-Submit: Renato Silva <rrsilva@google.com>
Reviewed-by: Denis Kuznetsov [CET] <antrim@chromium.org>
Commit-Queue: Renato Silva <rrsilva@google.com>
Cr-Commit-Position: refs/heads/master@{#797199}