tree 11e2afe21c6e6d45eb1441ccb026e3c46bb1ca44
parent d1c9cd2700c6d39a4fb3482b9576fe63be64e31e
author Jerry Chang <chenghsiuchang@google.com> 1638983939 +0800
committer Jerry Chang <chenghsiuchang@google.com> 1638985486 +0800

Always draw background for task thumbnail

Always draw background for task thumbnail because the task snapshot
might be translucent or partially empty.

For example, when drag-to-dismiss split screen, it will reparent tasks
from dismissing split root to the bottom of display. Task thumbnail of
those tasks might be partially empty because the snapshot was taken in
new bounds inherits from display but with split screen content.

Fix: 200096421
Test: drag to dismiss split, observed task thumbnail no longger been
      cropped.
Change-Id: I5d04daa55a558f79ccf5127080088bd0698d06d8