Add an ONC property for the third-party VPN provider extension ID

chromeos/network/onc/onc_translator_unittest.cc

Index: chromeos/network/onc/onc_translator_unittest.cc
diff --git a/chromeos/network/onc/onc_translator_unittest.cc b/chromeos/network/onc/onc_translator_unittest.cc
index 9444614d923cb974c69a017c39bdb20f2d252cb0..f63776161fb9cb49d5b26e36f05c31bd708daa5e 100644
--- a/chromeos/network/onc/onc_translator_unittest.cc
+++ b/chromeos/network/onc/onc_translator_unittest.cc
@@ -61,7 +61,8 @@ INSTANTIATE_TEST_CASE_P(
         std::make_pair("openvpn_clientcert_with_cert_pems.onc",
                        "shill_openvpn_clientcert.json"),
         std::make_pair("cellular.onc", "shill_cellular.json"),
-        std::make_pair("wimax.onc", "shill_wimax.json")));
+        std::make_pair("wimax.onc", "shill_wimax.json"),
+        std::make_pair("third_party_vpn.onc", "shill_third_party_vpn.json")));
 
 // First parameter: Filename of source Shill json.
 // Second parameter: Filename of expected translated ONC network part.
@@ -113,7 +114,9 @@ INSTANTIATE_TEST_CASE_P(
         std::make_pair("shill_cellular_with_state.json",
                        "translation_of_shill_cellular_with_state.onc"),
         std::make_pair("shill_wimax_with_state.json",
-                       "translation_of_shill_wimax_with_state.onc")));
+                       "translation_of_shill_wimax_with_state.onc"),
+        std::make_pair("shill_output_third_party_vpn.json",
+                       "third_party_vpn.onc")));
 
 }  // namespace onc
 }  // namespace chromeos