First off, ChromeOS sucks., it sucks on a fundamental level.
From inside a Linux OS you can compile it yourself,
directions:
http://www.chromium.org/chromium-os/developer-guide
or you can go here and download a optimized version called Hexxeh Vanilla: comes in usb bootable, virtualbox image, and i guess you can install it to a hdd if you hate yourself enough.
Are these guys stuck in the ‘90’s? If I want a headache, well, isn’t that what SUSE is for? I am so confused....