Believe it or not, the DOJ (and EU) have almost entirely ignored AdSense and it's integration as a monopoly force. They consider Chrome and Google Search to be the primary source of harms - the war against adblock is perfectly legal even if client-side modding should always be morally correct.
There are two different trials in the USA, one focused on search as a product (which Google lost, and plans to appeal after remedies are determined), and another antitrust trial about advertising (of which the trial happened, but no ruling yet).
I don't know much at all about the ads ecosystem so I have no idea how may adsense should be playing in either trial though.
