I work at a young startup (redmorph.com) building a similar privacy extension, and we've run into the exact same problem multiple times. While I understand that Google has a large volume of code to review, even an automated analysis tool could split out a line number and filename to reduce the guesswork :P

I have to add my shameless pitch to this thread, and I hope that fellow builders/entrepreneurs/startup-ers will emphasize with the fight to get attention/users:

uBlock is a great tool but it doesn't offer any network-level services, so you're still exposing IP/geo-location and potentially content sent over HTTP (as opposed to HTTPS). My company, RedMorph, will soon offer in-extension encrypted (AES-256) proxy at the first paid tier (we need to charge to cover infrastructure cost, it's still in beta) but you can download our free tracker blocking extension in the meantime. It's designed with usability in mind, so the average user can "plug-and-play". We're especially interested in empowering non-technical parents and children.

I'll be adding uBlock to this comparison soon: https://redmorph.com/articles/proof-in-the-packet.html

Thanks for your time, I appreciate thoughts and feedback!