Crouton sets up a Chromium OS centric Ubuntu chroot that should also be compatible with Debian as well. Crouton is short for ChRomium Os UbunTu chrOot enviroNment. For end-users this comes down to an Ubuntu environment while still running on the Chrome OS kernel.
This chroot should work with any Chrome OS device that is running in developer mode. Of course, if you want Ubuntu Linux on the device itself and to wipe Chrome OS completely, there are projects like ChrUbuntu for loading up Ubuntu on the ARM Chromebook.
For those wanting to try out Crouton or to find out more information on these scripts, visit the GitHub repository.