tree de0fe89359e30d0d5422d7c1382825c35f436703
parent 3c7f48116c7ac39494ad08bfc06d5259748bef0c
author Tony <twickham@google.com> 1558130693 -0400
committer Tony <twickham@google.com> 1558130693 -0400

Continue using window's sysui flags if task thumbnail unavailable

If the centermost task is null or doesn't yet have thumbnail data,
don't use its sysui flags - continue using the window we're swiping
from instead.

Bug: 132898688
Change-Id: I202937d8aa01ee24ef01693d9594c4929e6bd314