[whatwg] RWD Heaven: if browsers reported device capabilities in a request header

[Boris Zbarsky]

On 2/4/12 5:57 PM, Bjartur Thorlacius wrote:
> Do make note of the dynamic nature of many viewports* and the fact that
> user agents may wish to render resources to multiple medias. The latter
> is rare enough to tolerate an extra roundtrip.

Actually, printing an already-loaded page typically can't tolerate a 
roundtrip.  If nothing else, users have a tendency to try printing (or 
equivalently saving as PDF) after going offline.

-Boris