Merge "Handle multiple active bluetooth devices" into rvc-dev am: 4b647272 am: 8444f9f5 am: e2ecc7e0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11947520

Change-Id: I180e590d3003895ef87861c263a0991949abc1f4