Refactor X509Certificate caching to cache the OS handle, rather than the X509Certificate

net/base/cert_database_nss.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/cert_database.h"
 
 #include <cert.h>
 #include <certdb.h>
 #include <keyhi.h>
 #include <pk11pub.h>
@@ skipping 84 matching lines @@
 
 void CertDatabase::ListCerts(CertificateList* certs) {
   certs->clear();
 
   CERTCertList* cert_list = PK11_ListCerts(PK11CertListUnique, NULL);
   CERTCertListNode* node;
   for (node = CERT_LIST_HEAD(cert_list);
        !CERT_LIST_END(node, cert_list);
        node = CERT_LIST_NEXT(node)) {
     certs->push_back(X509Certificate::CreateFromHandle(
-        node->cert,
-        X509Certificate::SOURCE_LONE_CERT_IMPORT,
-        X509Certificate::OSCertHandles()));
+        node->cert, X509Certificate::OSCertHandles()));
   }
   CERT_DestroyCertList(cert_list);
 }
 
 CryptoModule* CertDatabase::GetPublicModule() const {
   CryptoModule* module =
       CryptoModule::CreateFromHandle(crypto::GetPublicNSSKeySlot());
   // The module is already referenced when returned from
   // GetPublicNSSKeySlot, so we need to deref it once.
   PK11_FreeSlot(module->os_module_handle());
@@ skipping 152 matching lines @@
   }
   return true;
 }
 
 bool CertDatabase::IsReadOnly(const X509Certificate* cert) const {
   PK11SlotInfo* slot = cert->os_cert_handle()->slot;
   return slot && PK11_IsReadOnly(slot);
 }
 
 }  // namespace net