tree 7610eaef2fb5162cd3d9f0bd89d75a7add62175d
parent 9f9ffca0c2db5f5f27f778517a9d9a16a2ee8a79
author Winson Chung <winsonc@google.com> 1587575308 -0700
committer Winson Chung <winsonc@google.com> 1588367326 +0000

Reset the preferred top focus stack when task visibility changes

- The change in visibility of a task does not always trigger a
  stack order change, which won't trigger the previously set
  top focus stack to be reset for the next activity launch.

Bug: 154658401
Test: Verify we don't regress on b/112084174, and open an activity
      from a bubbled task
Change-Id: I8770448b3ac40c384e8e93ca7ee37f1f8aa80cf4