GitLab

Prevent two focus indicators on the back arrow by making the grey circle
the tabbable element.

Bug: 878341
Change-Id: Ib18aa4669d3f8ea39754bb2ecadafaf718fe3143
Reviewed-on: https://chromium-review.googlesource.com/1249834Reviewed-by: Kristi Park <kristipark@chromium.org>
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594909}