Merge "Explicitly add "flush-broadcast-loopers" option." into udc-dev am:...

Merge "Explicitly add "flush-broadcast-loopers" option." into udc-dev am: 5835f7d5 am: 903ab0ae am: 933fffc8 am: 9bb00cd3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23328616



Change-Id: Ib5cceebae99678097bf5db0363695c1fe766f40c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>