*wip* NSS: handle chromeos system slot.

net/cert/nss_cert_database_chromeos_unittest.cc

Index: net/cert/nss_cert_database_chromeos_unittest.cc
diff --git a/net/cert/nss_cert_database_chromeos_unittest.cc b/net/cert/nss_cert_database_chromeos_unittest.cc
index 324575d0b1e8d5576244c62311ea29f9dfde66dd..5f69cbb080d8adf3c04fcdc213ed57613bf1cbc7 100644
--- a/net/cert/nss_cert_database_chromeos_unittest.cc
+++ b/net/cert/nss_cert_database_chromeos_unittest.cc
@@ -59,13 +59,15 @@ class NSSCertDatabaseChromeOSTest : public testing::Test,
         crypto::GetPublicSlotForChromeOSUser(user_1_.username_hash()),
         crypto::GetPrivateSlotForChromeOSUser(
             user_1_.username_hash(),
-            base::Callback<void(crypto::ScopedPK11Slot)>())));
+            base::Callback<void(crypto::ScopedPK11Slot)>()),
+        crypto::ScopedPK11Slot()));
     db_1_->SetSlowTaskRunnerForTest(base::MessageLoopProxy::current());
     db_2_.reset(new NSSCertDatabaseChromeOS(
         crypto::GetPublicSlotForChromeOSUser(user_2_.username_hash()),
         crypto::GetPrivateSlotForChromeOSUser(
             user_2_.username_hash(),
-            base::Callback<void(crypto::ScopedPK11Slot)>())));
+            base::Callback<void(crypto::ScopedPK11Slot)>()),
+        crypto::ScopedPK11Slot()));
     db_2_->SetSlowTaskRunnerForTest(base::MessageLoopProxy::current());
 
     // Add observer to CertDatabase for checking that notifications from