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: Ibbb8389fddfc4a3e2b789334d828d52c6fdd146c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>