nss: revert encrypted and origin bound certificates support.

net/socket/ssl_client_socket_nss.cc

Index: net/socket/ssl_client_socket_nss.cc
diff --git a/net/socket/ssl_client_socket_nss.cc b/net/socket/ssl_client_socket_nss.cc
index cf15d5e13b727965de1f1ea74b04e4dcf0e348e1..ed99bbf8c33c5b74b90c384edf09424ebb0df8b7 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -2083,12 +2083,9 @@ SECStatus SSLClientSocketNSS::OwnAuthCertHandler(void* arg,
 
 // static
 bool SSLClientSocketNSS::DomainBoundCertNegotiated(PRFileDesc* socket) {
-  PRBool xtn_negotiated = PR_FALSE;
-  SECStatus rv = SSL_HandshakeNegotiatedExtension(
-      socket, ssl_ob_cert_xtn, &xtn_negotiated);
-  DCHECK_EQ(SECSuccess, rv);
-
-  return xtn_negotiated ? true : false;
+  // TODO(wtc,mattm): this is temporary while DBC support is changed into
+  // Channel ID.
+  return false;
 }
 
 SECStatus SSLClientSocketNSS::DomainBoundClientAuthHandler(