mozilla-b2g/gaia — pull request #3742 by dominickuo (2012-08-23 09:54:23+00:00)
Title: Use mediadb.js and implement notifications in Music app

Remove the previous MediaDB.js and use shared/js/mediadb.js instead.
There are some events of mediadb that will notify users, handle and show the notifications.
These notifications are the same as those in Gallery.