tree c55380f488111027add9edb9aa6233ff395f6c69
parent eb4a353d8736dc47016a30607cb38e3c6c51562e
author Hyundo Moon <hdmoon@google.com> 1476333541 +0900
committer Hyundo Moon <hdmoon@google.com> 1476345910 +0900

MediaSessionCompat: Set default callback to pass extra binder

This CL sets default callback in MediaSessionCompat's constructor to respond
to the MediaControllerCompat's request for the extra binder.

Bug: 32129662
Test: Tested sendSessionEvent() with Support4Demos on API 21 and 22
Change-Id: Iafe894136b23a0ae3d5e8a0368c0827abd1dffe7