Merge "AudioService: prevent unmute on vol raise when muted by ringer/zen"...

Merge "AudioService: prevent unmute on vol raise when muted by ringer/zen" into udc-dev am: 3bd9c629

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23558219



Change-Id: I4f210293b08a623068f31f1fd7d467b36e0d403a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>