Merge "Revert "Use "frozen" state for broadcasts."" into udc-dev am: 4c62f6be

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22410254



Change-Id: I6aafa9ed83b3ff7f3b354f1b5bb9802b723b103e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>