Merge "Allow non-doze dreams to be windowless" into udc-qpr-dev am: 1c18d7b8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23528116



Change-Id: I7d6f9ccc1189b1a771042574d40c470a24b28486
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>