057038d20f
Makes sure we use the LoopbackRouteFetcher, and also wires up AddHeadersFetcher. Note that this pulls in loopback_route_fetcher.cc from svn revision r2649 The LoopbackRouteFetcher is applied unconditionally, while in mod_pagespeed it is not applied when one of these configuration settings is true: * disable_loopback_routing * slurping_enabled, or * test_proxy is set I added a TODO for that. (Sqash-merge of Otto's #193.)