tree 58df5413f9f36719a4367b27c4f1ed0ab43f3bb0
parent 87b4ceeca74886c7b185048c32fc74ffe30a93dd
author Robert Carr <racarr@google.com> 1512595027 -0800
committer Robert Carr <racarr@google.com> 1516390710 -0800

Rework stack Z-ordering promotion.

Down-boost home stack instead of up-boosting docked stack. This means
we don't have to do any assistant stack boosting so we wont have issues
with activities not being able to show on top of the assistant.

Change-Id: Iedef49a56a25fe0c6c26bfe4ef5194bcd8159c37
Fixes: 70318142
Fixes: 70675228
Fixes: 70178829
Fixes: 69553456
Fixes: 70178829
Test: Manual. ZOrderingTests. go/wm-smoke