[automerger skipped] RingtoneManager: verify default ringtone is audio am: a67982c990 -s ours

am skip reason: Merged-In I3f2c487ded405c0c1a83ef0a2fe99cff7cc9328e with SHA-1 30c9b4efb9 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21027119

Change-Id: Ifce379a977ab9e7f2cb038f4ea2caa76fc54f638
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>