https://www.emacswiki.org/emacs/EmacsForChromeBooks
I might pick one up at Fry's today just for giggles.
Update: Tried to run the NaCl Development Environment on my macbook to get a taste and it just crashes on launch. Seems like a lot of people have the same problem on chromebooks too: https://chrome.google.com/webstore/detail/nacl-development-e...
So maybe I'm not so excited to run out and buy a chromebook for development just yet.