Implement referred Token Bindings

net/http/http_request_info.h

 // Copyright (c) 2011 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_REQUEST_INFO_H__
 #define NET_HTTP_HTTP_REQUEST_INFO_H__
 
 #include <string>
 
 #include "net/base/net_export.h"
@@ skipping 34 matching lines @@
 
   // Any load flags (see load_flags.h).
   int load_flags;
 
   // The motivation behind this request.
   RequestMotivation motivation;
 
   // If enabled, then request must be sent over connection that cannot be
   // tracked by the server (e.g. without channel id).
   PrivacyMode privacy_mode;
+
+  // If present, the host of the referrer whose TokenBindingID should be
+  // included in a referred TokenBinding.
+  std::string token_binding_referrer;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_REQUEST_INFO_H__