Revert of Remove client_certs from SSLCertRequestInfo.

net/ssl/client_cert_store_nss.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_nss.h"
 
 #include <nss.h>
 #include <ssl.h>
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/string_piece.h"
-#include "base/task_runner_util.h"
 #include "base/threading/worker_pool.h"
 #include "crypto/nss_crypto_module_delegate.h"
 #include "net/cert/scoped_nss_types.h"
 #include "net/cert/x509_util.h"
 #include "net/ssl/ssl_cert_request_info.h"
 #include "net/third_party/nss/ssl/cmpcert.h"
 
 namespace net {
 
 ClientCertStoreNSS::ClientCertStoreNSS(
     const PasswordDelegateFactory& password_delegate_factory)
     : password_delegate_factory_(password_delegate_factory) {}
 
 ClientCertStoreNSS::~ClientCertStoreNSS() {}
 
-void ClientCertStoreNSS::GetClientCerts(
-    const SSLCertRequestInfo& request,
-    const ClientCertListCallback& callback) {
+void ClientCertStoreNSS::GetClientCerts(const SSLCertRequestInfo& request,
+                                         CertificateList* selected_certs,
+                                         const base::Closure& callback) {
   std::unique_ptr<crypto::CryptoModuleBlockingPasswordDelegate>
       password_delegate;
   if (!password_delegate_factory_.is_null()) {
     password_delegate.reset(
         password_delegate_factory_.Run(request.host_and_port));
   }
-  if (base::PostTaskAndReplyWithResult(
-          base::WorkerPool::GetTaskRunner(true /* task_is_slow */).get(),
+  if (base::WorkerPool::PostTaskAndReply(
           FROM_HERE,
           base::Bind(&ClientCertStoreNSS::GetAndFilterCertsOnWorkerThread,
                      // Caller is responsible for keeping the ClientCertStore
                      // alive until the callback is run.
                      base::Unretained(this), base::Passed(&password_delegate),
-                     &request),
-          callback)) {
+                     &request, selected_certs),
+          callback, true)) {
     return;
   }
-  // If the task could not be posted, behave as if there were no certificates.
-  callback.Run(CertificateList());
+  // If the task could not be posted, behave as if there were no certificates
+  // which requires to clear |selected_certs|.
+  selected_certs->clear();
+  callback.Run();
 }
 
 // static
 void ClientCertStoreNSS::FilterCertsOnWorkerThread(
     const CertificateList& certs,
     const SSLCertRequestInfo& request,
     CertificateList* filtered_certs) {
   DCHECK(filtered_certs);
 
   filtered_certs->clear();
@@ skipping 34 matching lines @@
     // |handle| was successfully parsed by |cert|, so this should never fail.
     DCHECK(filtered_certs->back());
   }
   DVLOG(2) << "num_raw:" << num_raw
            << " num_filtered:" << filtered_certs->size();
 
   std::sort(filtered_certs->begin(), filtered_certs->end(),
             x509_util::ClientCertSorter());
 }
 
-CertificateList ClientCertStoreNSS::GetAndFilterCertsOnWorkerThread(
+void ClientCertStoreNSS::GetAndFilterCertsOnWorkerThread(
     std::unique_ptr<crypto::CryptoModuleBlockingPasswordDelegate>
         password_delegate,
-    const SSLCertRequestInfo* request) {
+    const SSLCertRequestInfo* request,
+    CertificateList* selected_certs) {
   CertificateList platform_certs;
   GetPlatformCertsOnWorkerThread(std::move(password_delegate), &platform_certs);
-  CertificateList selected_certs;
-  FilterCertsOnWorkerThread(platform_certs, *request, &selected_certs);
-  return selected_certs;
+  FilterCertsOnWorkerThread(platform_certs, *request, selected_certs);
 }
 
 // static
 void ClientCertStoreNSS::GetPlatformCertsOnWorkerThread(
     std::unique_ptr<crypto::CryptoModuleBlockingPasswordDelegate>
         password_delegate,
     net::CertificateList* certs) {
   CERTCertList* found_certs =
       CERT_FindUserCertsByUsage(CERT_GetDefaultCertDB(), certUsageSSLClient,
                                 PR_FALSE, PR_FALSE, password_delegate.get());
   if (!found_certs) {
     DVLOG(2) << "No client certs found.";
     return;
   }
   for (CERTCertListNode* node = CERT_LIST_HEAD(found_certs);
        !CERT_LIST_END(node, found_certs); node = CERT_LIST_NEXT(node)) {
     scoped_refptr<X509Certificate> cert = X509Certificate::CreateFromHandle(
         node->cert, X509Certificate::OSCertHandles());
     if (!cert) {
       DVLOG(2) << "X509Certificate::CreateFromHandle failed";
       continue;
     }
     certs->push_back(std::move(cert));
   }
   CERT_DestroyCertList(found_certs);
 }
 
 }  // namespace net