Merge "Hide task bar on AOD" into tm-qpr-dev am: 3d3761b3 am: 230e9419 am: b60649f9 am: 829e7579

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21459145



Change-Id: I3a2b94cf06e38da0cda2bead9a3679aa4cfcb4b1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>