Merge "Set foreground priority for dream related broadcasts." into udc-dev am: a9228066

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22257485



Change-Id: Ie40cad7bfddc38e37fdd91b50fd377ec1f30069c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>