I just noticed that printing is totally broken in current ~amd64 chromium. After hitting ctrl+p the tab seen in the attached screenshot shows up. The Print button does nothing. Printing is a pretty important function of a web browser. IMO the versions that can't print should be masked until this is resolved, or at least print an ewarn about this. Reproducible: Always
Created attachment 261399 [details] screenshot
Have you enabled some experimental options from about:flags? I've just tested latest chromium-9 ebuild, and printing seems to work fine (normal print dialog appears). When I enabled "Print Preview" in about:flags and restarted the browser, I got the same result as in attached screenshot.
Oh shit. Yeah, I played with it some time ago, I enabled it, but couldn't find any "print preview" option anywhere... and then I forgot about it. It didn't say it replaces the whole print dialog... ;P Anyway, sorry for that.