GitLab

1) until clients release their wl_output outputs.
2) but up to 9 seconds, then destroy the global output object.

ug: b/168545216
Change-Id: I1035f417c5461ba9337a61506acba83d6ba08080
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2553527
Commit-Queue: Mitsuru Oshima <oshima@chromium.org>
Reviewed-by: Malay Keshav <malaykeshav@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833901}