Chrome OS is currently unsupported - we will remove it from the UI shortly.  We'd like to support it, but the mechanism used to list latest deployed version is far more complex for Chrome OS than it is for other platforms.

CC'ing krk@ / gkihumba@ - if they (or you) would like to help implement support for Chrome OS, I am happy to set up a meeting to discuss what that might look like.  I may get to this on my own at some point, but I would not count on it being anytime soon.

 Issue 818770  has been merged into this issue.

I've learned from amineer@ that difficulty here is that it's not easy to display the data without leading to confusion since different boards ship with different times.

I think one approach would be to focus on one board and make it very clear in the UI, like "Chrome OS (eve)".

A single board would work for me. Picking our latest-and-greatest device also sounds good.

krk@, gkihumba@, do you have any thoughts here?

This sounds like a great intern project :)
Currently ChromeOs TPMs don't have the cycles to implement this but let me discuss it with Josafat.

Going with latest-and-greatest sounds good to me but we need to identify an owner for this (any volunteers?) .. Grace's proposal is also good idea if we manage to get an intern 

No longer on the Chrome team, e-mail me @google.com if any attention still required from me here, otherwise good luck!

There is lot of interest to support Chrome OS on Chromium Dash, we need to identify the scoping/prioritizing this feature. I feel we should discuss and chalk-out a plan to address this.