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
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