A series of changes to Google Chrome OS’s source code provide the clearest indication yet that the search giant is preparing its notebook OS for the tablet form factor.
Google has toyed with the idea of bringing Chrome OS to tablets; it even made mockups and concepts of a tablet running Chrome OS last year, and it’s had intentions to include touch for a while. Still, former Google CEO Eric Schmidt stated last year that Android was for touch and Chrome OS was for keyboards.
http://mashable.com/2011/04/07/google-chrome-os-tablet/