GitLab

When running under a VNC session, the connection setup data sometimes
has duplicated depths, like so:

depth=24: visuals={123,456}
depth=24: visuals={789}

Previously, we were searching for the unique depth that matches the
root depth, then searching for the visual within the list
corresponding to that depth.  However, since the depths may not be
unique, search through all depths until we find a matching visual ID,
and then use that to set both the default depth and default visual.

R=sky

Change-Id: I51f75260f584f85f2bdc93048e6c4848cf00997a
Fixes: 1121438, 1115929
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2375888Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Auto-Submit: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802371}