Merge "Move Volume control Binder calls to worker thread" into tm-dev am: 6f8b2f6d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18350527



Change-Id: Id02015255d4b6dbb622d5c22450ad7c4642139d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>