tree 4dabf025096d32a726cde5f5ee170e9ed08f74ac
parent 47fcd26381b14be0dbf04d407e1462699cd21a4d
author Arnaud Berry <arnaudberry@google.com> 1544041285 -0800
committer Arnaud Berry <arnaudberry@google.com> 1548699895 +0000

MediaSourceViewModel cleanup

 - turned PlaybackViewModel MediaSourceViewModel into singletons tied to
   the application to provide a single source of truth as
   MediaDispatcherActivity was creating its own MediaSourceViewModel !

 - made MediaSourceViewModel maintain a consistent state without using
   LiveData objects (only using those to broadcast the state).

 - turned MediaBrowserConnector into a non LiveData helper that sends
   updates through a regular callback. Also protected it against obsolete
   MediaBrowserCompat.ConnectionCallback calls.

 - MediaSourceViewModel only uses the MediaBrowser token to get the
   MediaController, instead of preferring the active sessions from
   MediaSessionManager

Bug: 117997227
Test: manual
Change-Id: Ia61ae9dbacbf7296ca7d81a609ecda3a6665db66