[pkulak]

Here is the API:

http://developer.android.com/reference/gms-packages.html

The only thing there that is not explicitly tied to Google itself is the new location stuff. The rest is game, maps and Google+. I could totally see an argument that the location stuff (geo-fencing and such) would be more appropriate in AOSP, but that's about it. I'm going to keep my pitchfork holstered until I see a real pattern. Well, probably not even then since I don't see closed-source as a personal affront, but you get my drift.