Merge "[LE_Broadcast]Start broadcast and stop broadcast" into tm-dev am: 3f92b154 am: 98323148

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



Change-Id: Ic34fa4efe07b5c524e283231522e686e4112495d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>