c4f3cad586
We don't expect this case to occur, since track selection is normally expected to check canAcquireSession before selecting a track. Nevertheless, if an attempt is made to acquire a session when the media doesn't support the manager's UUID, we should fail in a more graceful way. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=173124170