commit 38257988f50c4375ad055fa4851d17abeeb18c82
author Evan Rosky <erosky@google.com> Thu May 21 15:45:17 2020 -0700
committer Evan Rosky <erosky@google.com> Wed May 27 10:36:49 2020 -0700
tree b9c0513429fb67cf61b1174a75ee1fae6428dbf7
parent c83fbdea5c95991f702b1c11ab7e1c8dc3c9f85d

Move pip behind home stack on dismiss

If home stack is nested, it means we're in split or some
other non-fullscreen mode. In these cases, dismissing a pip
task should move it to the back of the home-stack parent
rather than the back of the display.

This behavior is the same as what was done for Activity.moveToBack,
so this CL pulled that functionality into positionTaskBehindHome()
so it could be shared

Bug: 157159929
Test: ActivityStack tests. Or attempt repro in bug.
Change-Id: Icf04f87edf4c00b47e3f1e0a45d80bf9b680ce1c