I do however know two things. 1) That their local software processes almost every key stroke made. 2) And that they do send at least some portion of this data back to their servers.
At this point it would be trivial for them to send my private information TOMORROW if they decided to do so. I don't know that they don't have a subroutine to begin sending all of my SMS back to their servers if they decide to so for profit or under government coercion.
If they have no plans of using my Google searches, they shouldn't process it in the first place.