GitLab

For more information on the crostini force-close UI, see
crbug.com/964162.

To provide a force-close UI to crostini windows which don't respond.
We use a window property, set by the shell surface, and look for that
property during crostini window registration.

See crrev.com/c/1776140 for the changes that allow us to know when a
shell surface is attempting to close.

This CL shows how we will wire those up. The actual UI work will be
done in a separate CL.

Bug: 914322, 964162
Change-Id: Ieafd9bbaf8fe49e3411f4f76dabe52b63d7e784b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1775884
Commit-Queue: Nic Hollingum <hollingum@google.com>
Reviewed-by: Mitsuru Oshima <oshima@chromium.org>
Cr-Commit-Position: refs/heads/master@{#694991}