GoogleMap.OnInfoWindowCloseListener is missing from MarkerManager.Collection #1540
Description
MarkerManager documentation claims (emphasis mine):
Keeps track of collections of markers on the map. Delegates all Marker-related events to each collection's individually managed listeners.
However notably one OnInfoWindowCloseListener, also a marker related event and the only one not covered, isn't handled by MarkerManager (and consequently ClusterManager and related).
In #750 we added OnInfoWindowLongClickListener but the close listener wasn't included.