Merge "RingtoneManager: verify default ringtone is audio" into tm-qpr-dev am: 1e91c08c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21027159



Change-Id: I702a22457796059ef42c77806a4c68e65be02483
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>