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- We define HttpRequest and HttpResponse protocol buffers. The RMQ mechanism is *not* used for these (though the messages define rmq id fields in case we want to start). - GTalkHttpClient will send an http request over the connection to MCS if: - gtalk_tunnel_http in gservices is turned on - the request destination is the android proxy - it can make a connection to gtalkservice The request falls back to using GoogleHttpClient if it can't be processed over the MCS connection. A few shortcuts are taken with cookie handling, but these are okay for the envisioned usage. Original author: dougz Merged from: //branches/donutburger/... Automated import of CL 144094