Allow chrome to handle 407 auth challenges to CONNECT requests

net/http/http_proxy_utils.h

 // Copyright (c) 2010 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.
 
 #ifndef NET_HTTP_HTTP_PROXY_UTILS_H_
 #define NET_HTTP_HTTP_PROXY_UTILS_H_
 #pragma once
 
 #include <string>
 
 namespace net {
 
+class BoundNetLog;
+class HttpAuthController;
+class HttpResponseInfo;
 struct HttpRequestInfo;
 class HttpRequestHeaders;
 class HostPortPair;
 
 // The HTTP CONNECT method for establishing a tunnel connection is documented
 // in draft-luotonen-web-proxy-tunneling-01.txt and RFC 2817, Sections 5.2 and
 // 5.3.
 void BuildTunnelRequest(const HttpRequestInfo& request_info,
                         const HttpRequestHeaders& auth_headers,
                         const HostPortPair& endpoint,
                         std::string* request_line,
                         HttpRequestHeaders* request_headers);
 
+// When an auth challenge (407 response) is received during tunnel construction
+// this method should be called.
+int HandleAuthChallenge(HttpAuthController* auth,
+                        HttpResponseInfo* response,
+                        const BoundNetLog& net_log);
+
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_PROXY_UTILS_H_