commit 105d3bd0968a15e2cc2876e4bcbece5f41d1137f
author Cheney Ni <cheneyni@google.com> Fri Jul 20 20:50:07 2018 +0800
committer Cheney Ni <cheneyni@google.com> Tue Jul 31 11:26:22 2018 +0800
tree e1b3baaf33dadf6d238df055b74678fe86b4885d
parent 7f2a6cb830d629b024e7e0d6e922b0b9300bc5b2

Keep those MediaControllers of none addressed players to be up-to-date

We moniter both changes of session and player from MediaSessionManager
and only update the MediaController of activated player. In case if
session changes serveral times before player activated, the old
MediaController would be deprecated but still was in used.  Without
session changed again to update the MediaController, it causes AVRCP
can't receive callbacks from MediaSessionManager after player activated.

We now always update the MediaController to new one no matter the
player is activated or not so can receive player's callbacks as well.

Bug: 110408992
Bug: 111622139
Test: manually switching players
Change-Id: Idfa144f68743679613f4e11f8cd75dd889f01f0e