Merge "Add the connection state change handle for the volume control profile" into udc-dev am: 2a37e27c am: 186f55e7 am: 005a40dd am: 34e44812

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23276876



Change-Id: I4259fd444a45894f27c43d9242fa31a925212787
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>