Does Microsoft include Google search revenue in Windows revenue? Does a purchase of a hat in Team Fortress count as Windows revenue?
I suspect -- with no more evidence than anyone else -- that the $544 million is but the sum of partner payments for the Google applications or accelerated access, added with Google's cut of the Nexus line revenues. Advertising, though....Android itself has zero advertisements. I don't see ads in Google Maps, gmail, or in any system service or function.