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 am: 9efc1aa7 am: e4a8060b am: c9ebf27b

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



Change-Id: Ia84805acf9095a2eeb4c2a2687cfe578502dcc23
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>