GitLab

In https://crrev.com/c/1249834 the tabbable element was changed
from a button to role=button so using space to press it no longer
worked.

Bug: 891652
Change-Id: I8dd7155de5deba6f2b25c3ba5cb39761f84eafdc
Reviewed-on: https://chromium-review.googlesource.com/c/1258880Reviewed-by: Kristi Park <kristipark@chromium.org>
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596396}