Merge "Make sendMessage ListenableFuture" am: 2fe5ea0499 am: f3746d26b0 am: d9bbc377df am: 4c4c599eb3

Original change: https://android-review.googlesource.com/c/platform/packages/services/Telephony/+/1640203

Change-Id: I34ca9e2e9a5ee5e1b172724d52b2b3e513ad43e6