Support for using OS-native certificates for SSL client auth....

net/socket/client_socket_factory.cc

Index: net/socket/client_socket_factory.cc
diff --git a/net/socket/client_socket_factory.cc b/net/socket/client_socket_factory.cc
index 90bcdc566521552f977e8fc0c461063021db6281..9a7decf5b70da1716a4354eb86cb5e078004679b 100644
--- a/net/socket/client_socket_factory.cc
+++ b/net/socket/client_socket_factory.cc
@@ -14,7 +14,6 @@
 #elif defined(USE_NSS)
 #include "net/socket/ssl_client_socket_nss.h"
 #elif defined(OS_MACOSX)
-#include "net/socket/ssl_client_socket_mac.h"
 #include "net/socket/ssl_client_socket_nss.h"
 #endif
 #include "net/socket/ssl_host_info.h"
@@ -38,12 +37,6 @@ SSLClientSocket* DefaultSSLClientSocketFactory(
   return new SSLClientSocketNSS(transport_socket, hostname, ssl_config,
                                 shi.release());
 #elif defined(OS_MACOSX)
-  // TODO(wtc): SSLClientSocketNSS can't do SSL client authentication using
-  // Mac OS X CDSA/CSSM yet (http://crbug.com/45369), so fall back on
-  // SSLClientSocketMac.
-  if (ssl_config.send_client_cert)
-    return new SSLClientSocketMac(transport_socket, hostname, ssl_config);
-
   return new SSLClientSocketNSS(transport_socket, hostname, ssl_config,
                                 shi.release());
 #else