Intercept DNS request in a Chrome Extension?

If I want to test http://www.domain.com, but I want to test two versions of it by switching the IP out (e.g. one resolves to 127.0.0.1 and the other 192.168.1.200) is it possible to write/use a chrome extension to handle intercepting the DNS query and resolving to my IP of choice?

The current workaroun开发者_StackOverflowd is to utilize the hosts file and flush the DNS cache to switch between them but that's less than optimal and was hoping a browser extension could handle the same thing.

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There's no mechanism to manipulate DNS requests/responses natively inside Chrome, not even via the upcoming WebRequest API.

Is there a reason that you need to test with exactly the same domain name? Setting up a dev environment on something like http://dev.example.com/ (or http://example.dev/ if you run your own DNS or have edited your hosts file) is a clean mechanism for producing the effect you want in a way that's functional with the APIs you have access to; writing an extension that gave you a button to toggle between the two domains with the push of a button would be trivial