If the safe media warning is enabled, make sure
we display it from the new inline slider preference in
Settings (without showing the volume dialog itself).
Also:
- Update the warning dialog to the new sysui theme.
- Separate the warning sentences with an additional line.
- Fix the auto-dismiss timeout.
- Add a system property to additionally enable the safe
media warning for testing
- Add more information to audio service dumpsys.
Bug:15434662
Change-Id: I95fec12c9049bbfdb7ebdf246160e4b12c0c5be3