As far as I am aware the only option for ChromeOS currently is
LibData.
They have a time and print management system that works with ChromeOS, PC and Mac.
For ChromeOS Libdata requires a managed public session so you need to have a Google Apps domain.
The Libdata app is set added to the profile for the public session and provides, log in, time and print management.
The LibData system interfaces with the library database (ILS) using the SIP2 protocol so patrons can be allowed or denied for most things that SIP2 can return like overdues, excessive fines or age categories.
We do not currently have this system deployed at any of our libraries but have libraries interested in it as they move more public machines to Chrome devices.
I have tested the system in our PC lab, it works very well and pricing is reasonable.
Marshal