Make NSSCertDatabase::ListCerts work async on a worker thread.

net/ssl/client_cert_store_chromeos.cc

 // Copyright 2013 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/ssl/client_cert_store_chromeos.h"
 
 #include <cert.h>
 
 #include "base/bind.h"
 #include "crypto/nss_crypto_module_delegate.h"
 #include "crypto/nss_util_internal.h"
 
 namespace net {
 
 ClientCertStoreChromeOS::ClientCertStoreChromeOS(
     const std::string& username_hash,
     const PasswordDelegateFactory& password_delegate_factory)
     : ClientCertStoreNSS(password_delegate_factory),
-      username_hash_(username_hash) {}
+      username_hash_(username_hash),
+      profile_filter_(new NSSProfileFilterChromeOS()) {}
 
 ClientCertStoreChromeOS::~ClientCertStoreChromeOS() {}
 
 void ClientCertStoreChromeOS::GetClientCerts(
     const SSLCertRequestInfo& cert_request_info,
     CertificateList* selected_certs,
     const base::Closure& callback) {
   crypto::ScopedPK11Slot private_slot(crypto::GetPrivateSlotForChromeOSUser(
       username_hash_,
       base::Bind(&ClientCertStoreChromeOS::DidGetPrivateSlot,
@@ skipping 25 matching lines @@
       selected_certs->end());
   DVLOG(1) << "filtered " << pre_size - selected_certs->size() << " of "
            << pre_size << " certs";
 }
 
 void ClientCertStoreChromeOS::DidGetPrivateSlot(
     const SSLCertRequestInfo* request,
     CertificateList* selected_certs,
     const base::Closure& callback,
     crypto::ScopedPK11Slot private_slot) {
-  profile_filter_.Init(crypto::GetPublicSlotForChromeOSUser(username_hash_),
+  profile_filter_->Init(crypto::GetPublicSlotForChromeOSUser(username_hash_),
                        private_slot.Pass());
   ClientCertStoreNSS::GetClientCerts(*request, selected_certs, callback);
 }
 
 void ClientCertStoreChromeOS::InitForTesting(
     crypto::ScopedPK11Slot public_slot,
     crypto::ScopedPK11Slot private_slot) {
-  profile_filter_.Init(public_slot.Pass(), private_slot.Pass());
+  profile_filter_->Init(public_slot.Pass(), private_slot.Pass());
 }
 
 bool ClientCertStoreChromeOS::SelectClientCertsForTesting(
     const CertificateList& input_certs,
     const SSLCertRequestInfo& request,
     CertificateList* selected_certs) {
   CERTCertList* cert_list = CERT_NewCertList();
   if (!cert_list)
     return false;
   for (size_t i = 0; i < input_certs.size(); ++i) {
     CERT_AddCertToListTail(
         cert_list, CERT_DupCertificate(input_certs[i]->os_cert_handle()));
   }
 
   GetClientCertsImpl(cert_list, request, false, selected_certs);
   CERT_DestroyCertList(cert_list);
   return true;
 }
 
 
 }  // namespace net