Add RetainedRef uses where needed.

net/cert/nss_cert_database.cc

Index: net/cert/nss_cert_database.cc
diff --git a/net/cert/nss_cert_database.cc b/net/cert/nss_cert_database.cc
index e85ce3ba0dbe764c18910eee53dd49e6c25418d9..896d1d3517bdd686776230251d14956afd4c6e10 100644
--- a/net/cert/nss_cert_database.cc
+++ b/net/cert/nss_cert_database.cc
@@ -455,19 +455,19 @@ void NSSCertDatabase::NotifyCertRemovalAndCallBack(
 
 void NSSCertDatabase::NotifyObserversOfCertAdded(const X509Certificate* cert) {
   observer_list_->Notify(FROM_HERE, &Observer::OnCertAdded,
-                         make_scoped_refptr(cert));
+                         base::RetainedRef(cert));
 }
 
 void NSSCertDatabase::NotifyObserversOfCertRemoved(
     const X509Certificate* cert) {
   observer_list_->Notify(FROM_HERE, &Observer::OnCertRemoved,
-                         make_scoped_refptr(cert));
+                         base::RetainedRef(cert));
 }
 
 void NSSCertDatabase::NotifyObserversOfCACertChanged(
     const X509Certificate* cert) {
   observer_list_->Notify(FROM_HERE, &Observer::OnCACertChanged,
-                         make_scoped_refptr(cert));
+                         base::RetainedRef(cert));
 }
 
 // static