Treat QUIC proxy as a valid HTTP proxy.

net/http/http_network_transaction.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/http/http_network_transaction.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 553 matching lines @@
   stream_.reset(stream);
   stream_request_.reset();  // we're done with the stream request
   OnIOComplete(ERR_HTTPS_PROXY_TUNNEL_RESPONSE);
 }
 
 bool HttpNetworkTransaction::is_https_request() const {
   return request_->url.SchemeIs("https");
 }
 
 bool HttpNetworkTransaction::UsingHttpProxyWithoutTunnel() const {
-  return (proxy_info_.is_http() || proxy_info_.is_https()) &&
+  return (proxy_info_.is_http() || proxy_info_.is_https() ||
+          proxy_info_.is_quic()) &&

[bengr, 2015/02/03 23:03:08]

@rch: would proxy_info_.is_quic() return false if tunneled?

[Ryan Hamilton, 2015/02/03 23:06:50]

ProxyInfo doesn't know about any tunnel which might be used. It simply describes
the nature of the proxy (if any) that is being connected to. This method does
the "using a tunnel" detection.

(As far as I know)

          !(request_->url.SchemeIs("https") || request_->url.SchemeIsWSOrWSS());
 }
 
 void HttpNetworkTransaction::DoCallback(int rv) {
   DCHECK_NE(rv, ERR_IO_PENDING);
   DCHECK(!callback_.is_null());
 
   // Since Run may result in Read being called, clear user_callback_ up front.
   CompletionCallback c = callback_;
   callback_.Reset();
@@ skipping 945 matching lines @@
       description = base::StringPrintf("Unknown state 0x%08X (%u)", state,
                                        state);
       break;
   }
   return description;
 }
 
 #undef STATE_CASE
 
 }  // namespace net