Fix webui cert viewer showing wrong cert chain on NSS and no chain on OpenSSL.

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 6eca9649830d9bd0be60adbbcc11d4861a51256f..2b8b2345949d5b5b5e14283fb91a357032bfb61f 100644
--- a/net/socket/ssl_client_socket_nss.cc
+++ b/net/socket/ssl_client_socket_nss.cc
@@ -1426,12 +1426,7 @@ SECStatus SSLClientSocketNSS::Core::PlatformClientAuthHandler(
         *result_certs = CERT_NewCertList();
         *result_private_key = private_key;
 
-        chain.push_back(core->ssl_config_.client_cert->os_cert_handle());
-        const X509Certificate::OSCertHandles& intermediates =
-            core->ssl_config_.client_cert->GetIntermediateCertificates();
-        if (!intermediates.empty())
-          chain.insert(chain.end(), intermediates.begin(), intermediates.end());
-
+        core->ssl_config_.client_cert->GetCertificateChain(&chain);
         for (size_t i = 0, chain_count = chain.size(); i < chain_count; ++i) {
           CSSM_DATA cert_data;
           SecCertificateRef cert_ref = chain[i];