Policing extension permissions isn't quite as easy in Chrome as it sounds like it will be in the next Safari upgrade, but you do have options: Choose More Tools then Extensions from the Chrome menu, then click Details next to any extension. As an added bonus, all of this tracking and blocking should mean a faster browsing experience too.
Individual trackers and sites as a whole can be granted permission to operate outside of the restrictions put in place by uBlock Origin and Disconnect, which can be used for sites with responsible advertising that you want to support. A similar tool for Chrome that you can try is Disconnect-again, a single click blocks out tracking technologies, unwanted advertising, and social plug-ins (used by the likes of Facebook to see what you're up to when you're out and about across the web).
As well as stopping tracking across multiple sites, uBlock Origin also suppresses aggressive ads and protects against sites embedded with malware.
