Settings: Make Safe headset volume handling user configurable (2 of 2)

Patch set 1  : Initial commit
Patch set 2  : Code cleanup and dedupe

Change-Id: I9d46ba5b8ca5a8b18dcb4856c348c86bc3e70899
Settings: Safe headset volume override legal waiver

Patch set 1  : Initial commit
Patch set 2  : Remove alert icon (per Design guidelines)
Patch set 3  : Fix per Danesh's comment

Change-Id: Ic6b9ba2620de6efb327416e8955c3a2c08af043b