Merge "Fire off BluetoothConnectionCallback when we fire off the broadcasts for ACL connections and disconnections." am: 17fc798f44

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Bluetooth/+/1478638

Change-Id: Idc239acca0b4084ba4e8b0ebb8e3f278aed58b8a