GitLab

Currently visible on all desks windows only appear in the active desk's
view. They should appear on all desks' preview views.

This CL augments DeskPreviewView to mirror visible on all desks windows
as well.

Test: manual
Bug: 1163691
Change-Id: I763330edc2567aa6c96f9a418498207020cb5353
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2616326
Commit-Queue: Jeremy Chinsen <chinsenj@chromium.org>
Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Reviewed-by: Sammie Quon <sammiequon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842805}