domain name system - Free Web Forwarding without Nameservers

I have a site running Google App Engine and using CloudFlare (a free CDN proxy, using its own nameserver).

This leaves me with no options for the root domain.
App Engine does not support naked domains, and CloudFlare doesn't support web forwarding.

All forwarding options that I've seen, including my registrar's, only work if the domain's nameservers are set to them.

Does anyone know of a free service that will send HTTP 301 (or 302) redirects without forcing me to change my nameservers?
(I'd make an A record for @ pointing to their server)