Update libssl to NSS 3.18 RTM

net/third_party/nss/ssl/sslt.h

Index: net/third_party/nss/ssl/sslt.h
diff --git a/net/third_party/nss/ssl/sslt.h b/net/third_party/nss/ssl/sslt.h
index 566074d7c8c86cb5765d1037bbaef447bbb87329..c36b8c73fd93333ac4160796a09deb23aef72c95 100644
--- a/net/third_party/nss/ssl/sslt.h
+++ b/net/third_party/nss/ssl/sslt.h
@@ -195,7 +195,7 @@ typedef enum {
 typedef enum {
     ssl_server_name_xtn              = 0,
     ssl_cert_status_xtn              = 5,
-#ifdef NSS_ENABLE_ECC
+#ifndef NSS_DISABLE_ECC
     ssl_elliptic_curves_xtn          = 10,
     ssl_ec_point_formats_xtn         = 11,
 #endif
@@ -207,9 +207,10 @@ typedef enum {
     ssl_session_ticket_xtn           = 35,
     ssl_next_proto_nego_xtn          = 13172,
     ssl_channel_id_xtn               = 30032,
-    ssl_renegotiation_info_xtn       = 0xff01	/* experimental number */
+    ssl_renegotiation_info_xtn       = 0xff01,
+    ssl_tls13_draft_version_xtn      = 0xff02   /* experimental number */
 } SSLExtensionType;
 
-#define SSL_MAX_EXTENSIONS             12 /* doesn't include ssl_padding_xtn. */
+#define SSL_MAX_EXTENSIONS             13 /* doesn't include ssl_padding_xtn. */
 
 #endif /* __sslt_h_ */