RoboErik ef3c9e9b05 Add volume handling APIs to sessions
This renames and moves the VolumeProvider and adds apis to
MediaController to get the current state of volume on a session and
to request changes to the volume.

Change-Id: I290e9efefb6676c805819a29e1d054c3192c6773
2014-06-20 13:39:41 -07:00
..
2014-06-20 13:39:41 -07:00