On 2015-01-12 13:08, Peter Laursen wrote:
2)
"The web has a concept of device pixels vs css pixels as well".  Does anybody know how Chromebooks handle it? That could bring a new perspective into discussion.

Chrome OS scales only on a 2x multiplier as well.
http://sebastien-gabriel.com/designers-guide-to-dpi/ (scroll down to the section Mac and Chrome PPI)
- Andreas