Chrome users should seriously reconsider switching to Firefox. We've created another Internet Explorer.

So, I was experimenting with this concept yesterday but couldn't get it to work...

How do you set up a local proxy to do this kind of stuff? I got up to the point of changing request/response headers but couldn't manage to actually edit the data going through, esp when dealing with ssl (which is the point really, of ssl).

mitmproxy

That is a good solution for corporate networks.