Merge "Reland "Track per-process freezable state in BroadcastQueue."" into udc-dev am: 39ee2327

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23705789



Change-Id: Ied196977c846b84dd2244b420b0a258419208814
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>