http://thenextweb.com/google/2013/11/21/google-building-chrome-app-based-development-environment-using-dart-polymer/?fromcat=all
It seems that lately Google has been pushing the boundary of Chrome and Chromium OS. I discussed about Chromium OS limitations before (
here and
here), but the article above seems to make my posts very obsolete as it will be soon before we could develop on Chromium OS/Chrome.