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

net/base/ssl_client_auth_cache.cc

Index: net/base/ssl_client_auth_cache.cc
diff --git a/net/base/ssl_client_auth_cache.cc b/net/base/ssl_client_auth_cache.cc
index 7b0e158944399133e054658d4929e7ef4b357a72..f5e5e91d9f8bf64470270691967bb665f5de98f4 100644
--- a/net/base/ssl_client_auth_cache.cc
+++ b/net/base/ssl_client_auth_cache.cc
@@ -10,11 +10,11 @@
 namespace net {
 
 SSLClientAuthCache::SSLClientAuthCache() {
-  CertDatabase::AddObserver(this);
+  CertDatabase::GetInstance()->AddObserver(this);
 }
 
 SSLClientAuthCache::~SSLClientAuthCache() {
-  CertDatabase::RemoveObserver(this);
+  CertDatabase::GetInstance()->RemoveObserver(this);
 }
 
 bool SSLClientAuthCache::Lookup(
@@ -41,7 +41,7 @@ void SSLClientAuthCache::Remove(const std::string& server) {
   cache_.erase(server);
 }
 
-void SSLClientAuthCache::OnUserCertAdded(const X509Certificate* cert) {
+void SSLClientAuthCache::OnCertAdded(const X509Certificate* cert) {
   cache_.clear();
 }