[NAN] Renamed listeners to callback per API guidelines [DO NOT MERGE] am:...
[NAN] Renamed listeners to callback per API guidelines [DO NOT MERGE] am: 0d0f0c7f -s ours am: ea2ccdf4
am: 5342acfd -s ours
* commit '5342acfd':
[NAN] Renamed listeners to callback per API guidelines [DO NOT MERGE]