Use per-user nssdb in onc certificate importer

chrome/browser/chromeos/policy/device_network_configuration_updater.cc

Index: chrome/browser/chromeos/policy/device_network_configuration_updater.cc
diff --git a/chrome/browser/chromeos/policy/device_network_configuration_updater.cc b/chrome/browser/chromeos/policy/device_network_configuration_updater.cc
index a68cd31a3ae61477c508d67f159e6cabfcfc6633..090049b7c92a0ce91bf5606eac065d63bf985c15 100644
--- a/chrome/browser/chromeos/policy/device_network_configuration_updater.cc
+++ b/chrome/browser/chromeos/policy/device_network_configuration_updater.cc
@@ -66,9 +66,12 @@ void DeviceNetworkConfigurationUpdater::Init() {
 }
 
 void DeviceNetworkConfigurationUpdater::ImportCertificates(
-    const base::ListValue& certificates_onc) {
-  certificate_importer_->ImportCertificates(
-      certificates_onc, onc_source_, NULL);
+    const base::ListValue& certificates_onc,
+    net::NSSCertDatabase* target_nssdb) {
+  // Importing CA and server certs from device policy is not  allowed, while
+  // importing client is not yet supported (as a system-wide PKCS#11 token to
+  // which they should be imported is not yet available).
+  NOTREACHED();
 }
 
 void DeviceNetworkConfigurationUpdater::ApplyNetworkPolicy(