Where? All i could find is they donated > $50,000 but i dont see how much more. I guess it depends how much more, but that doesn't particularly seem like a lot relative to WMF's annual budget.
The annual report does not have this info as far as i can tell.
That article is about the endowment not WMF itself. It might all be connected, but the endowment is removed enough that i think the argument that the donation gives google any control is silly.
It also says that there was a 1.1 million donation to WMF proper, based on a vote of google staff. Really not seeing the potential control there, given that it wasnt really directed by google executive. Regardless, i dont think a donation that is only ~1% of the annual budget is enough to give google any control