Merge "[LE_Broadcast]Start broadcast and stop broadcast" into tm-dev am: 3f92b154 am: 153d0074

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17707387



Change-Id: I5df3d25ae001f75b8fbe11869944e9e21af94d2a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>