Loading
MediaRouter: clear session info when disconnected
When MediaRoute2ProviderProxy disconnects, it should clear its session info but it didn't. This CL corrects it such that sessions are released correctly. In addition to that, it also releases the previous controllers when transfer w/ MediaRouter2Manager. Test: manually Change-Id: If827a9473d79e3a154688c0dfaa3075b0e0b6ef5