I uploaded Executive Lunch to Google Play/Google Books and yes, there is now a box to check for DRM. The default is unchecked. So it is possible to load books with or without on the interface I see (doesn't mean this is the interface all publishers would use.)
In the past world of Google books (before Google play) there was really only an "upload" option and not much else. I think it took .doc or html. It now takes epub and has a default to also sell PDF. I assume they will create the PDF as that is implied in their help on the subject. I don't go out of my way to create PDF as it's cumbersome and yet another format to track.
FWIW.
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