Merge "Use "frozen" state for broadcasts." into udc-dev am: 54529049

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22356284



Change-Id: Ifacc92d4208c4cff74b9494b53197b7b286f1449
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>