Merge "Track per-process freezable state in BroadcastQueue." into udc-dev am: a8dbdd94 am: a318f083 am: a6e98b32

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23220096



Change-Id: I86f79214b2b3abe73f8ff2c3ce432ca0898d83cb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>