Windows

Quick explanation of the non trivial change: this removes a checksum test and a test for a string which we don't use. This is code that was brought over with ABP. The reason for removing this is that it was preventing the cookie block list from updating. It doesn't seem necessary to me, and since I am trying to rid this code base of ABP anyway I think it's best just to delete it. cc @jsha for review
I don't think it will cause problems. This is just a data structure that stores the TLD's that have actually been cookie blocked by the browser. In my browser it's only 10 entries long right now, I'm not to worried about it.