GitLab

Make sure that an invalidated dialog doesn't call
AppModalDialogQueue::ShowNextDialog() during shutdown. This could
potentially cause issues as it causes ShowNextDialog to be reentrant,
which doesn't seem intentional.

Also remove an unnecessary check: the active dialog is not in the dialog
queue so we don't need to check the queue against the active dialog when
hiding a batch of dialogs.

Bug: 1060986
Change-Id: I962a5cf14c3f5b67d287de61464b604dbe96aaf7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2295822
Commit-Queue: Evan Stade <estade@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789242}