Move the NSS functions out of CertDatabase into a new NSSCertDatabase class.

net/base/cert_database_win.cc

Index: net/base/cert_database_win.cc
diff --git a/net/base/cert_database_win.cc b/net/base/cert_database_win.cc
index 038fc1c3b2a04b9018c0131b8199f8aa61b3adf7..2471850d648aaf9ef203e4fbe113911fd545820b 100644
--- a/net/base/cert_database_win.cc
+++ b/net/base/cert_database_win.cc
@@ -13,9 +13,6 @@
 
 namespace net {
 
-CertDatabase::CertDatabase() {
-}
-
 int CertDatabase::CheckUserCert(X509Certificate* cert) {
   if (!cert)
     return ERR_CERT_INVALID;
@@ -50,7 +47,7 @@ int CertDatabase::AddUserCert(X509Certificate* cert) {
   if (!added)
     return ERR_ADD_USER_CERT_FAILED;
 
-  CertDatabase::NotifyObserversOfUserCertAdded(cert);
+  NotifyObserversOfCertAdded(cert);
   return OK;
 }