This appears to be specifically for chromium OS not the Chrome browser. If you look at the commit message it references a chromium-os bug.

http://code.google.com/p/chromium-os/issues/detail?id=23271

If you're interested in the long term plans for this feature just see all the bugs for this component

http://code.google.com/p/chromium-os/issues/list?q=label:Are...