Implement Token Binding negotiation TLS extension

net/ssl/ssl_info.h

Index: net/ssl/ssl_info.h
diff --git a/net/ssl/ssl_info.h b/net/ssl/ssl_info.h
index 28ce82d0ae6cb1ddf7a20f6ab9fd47dfe6075903..b18b5266c3e87331fbbb9ba2a124dc55c84b7de5 100644
--- a/net/ssl/ssl_info.h
+++ b/net/ssl/ssl_info.h
@@ -13,6 +13,7 @@
 #include "net/cert/sct_status_flags.h"
 #include "net/cert/x509_cert_types.h"
 #include "net/ssl/signed_certificate_timestamp_and_status.h"
+#include "net/ssl/ssl_config.h"
 
 namespace net {
 
@@ -82,6 +83,15 @@ class NET_EXPORT SSLInfo {
   // True if a channel ID was sent to the server.
   bool channel_id_sent;
 
+  // True if Token Binding was negotiated with the server and we agreed on a
+  // version and key params.
+  bool token_binding_negotiated;
+
+  // Only valid if |token_binding_negotiated| is true. Contains the key param
+  // negotiated by the client and server in the Token Binding Negotiation TLS
+  // extension.
+  TokenBindingParam token_binding_key_param;
+
   HandshakeType handshake_type;
 
   // The hashes, in several algorithms, of the SubjectPublicKeyInfos from