Improved support for loading client certificates on smart cards on macOS

net/ssl/client_cert_store_mac.h

Index: net/ssl/client_cert_store_mac.h
diff --git a/net/ssl/client_cert_store_mac.h b/net/ssl/client_cert_store_mac.h
index 1bad779dd35377fb284356148a9d8eb1f1f5bd3d..d63a29a5f8ba4c560bd1f6a8cb3336f119652d5d 100644
--- a/net/ssl/client_cert_store_mac.h
+++ b/net/ssl/client_cert_store_mac.h
@@ -5,6 +5,8 @@
 #ifndef NET_SSL_CLIENT_CERT_STORE_MAC_H_
 #define NET_SSL_CLIENT_CERT_STORE_MAC_H_
 
+#include <Security/Security.h>
+
 #include "base/callback.h"
 #include "base/macros.h"
 #include "net/base/net_export.h"
@@ -45,6 +47,14 @@ class NET_EXPORT ClientCertStoreMac : public ClientCertStore {
       const SSLCertRequestInfo& request,
       CertificateList* selected_certs);
 
+  // Given an |identity| identifies its corresponding certificate, and either
+  // adds it to |regular_certs| or assigns it to |preferred_cert|, if the
+  // |identity| matches the |preferred_identity|.
+  void AddIdentity(CertificateList& regular_certs,
+                   scoped_refptr<X509Certificate>& preferred_cert,
+                   SecIdentityRef preferred_identity,
+                   SecIdentityRef identity);
+
   DISALLOW_COPY_AND_ASSIGN(ClientCertStoreMac);
 };