If chrome team who thinks about the world and ads team who thinks about $$$ are total separate entities who don't influence each other for special interests then I applaud the effort.

I hope this is done in the open in chromium source code. Basically the current way extensions work is by injecting massive amounts of CSS and js in the page. This makes a lot of optimizations in chrome useless for fast page renders. Doing an optimized ad block engine would make chrome feel faster