Enable client certificate patterns in device ONC policy

components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc

Index: components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc
diff --git a/components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc b/components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc
index 1f142a16ce3a0e9b75373af0cff46722e334fd42..882a83934fa3d293858626626648c7beb956cb0e 100644
--- a/components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc
+++ b/components/sync_wifi/wifi_config_delegate_chromeos_unittest.cc
@@ -109,7 +109,8 @@ class FakeManagedNetworkConfigurationHandler
   }
   const base::DictionaryValue* FindPolicyByGuidAndProfile(
       const std::string& guid,
-      const std::string& profile_path) const override {
+      const std::string& profile_path,
+      ::onc::ONCSource* onc_source) const override {
     NOTIMPLEMENTED();
     return nullptr;
   }