Acquisition, acquisition, basic OS feature (and therefore part of the Android acquisition), Google EEE of thing you could already do (and developed by an individual Google developer without the approval of Google management), Google CADT, Google EEE of something you could already do, acquisition, acquisition, actual Google creation, don't know, Google EEE of something that already existed (Firebug was first), not good, too trivial to count, actual Google creation that I already mentioned, don't know what you mean, not good.
Flights were acquisition and to this day are a bit of unlikely island internally (AFAIK QPX engine is still in use, and it's written in language otherwise verboten at Google)