Use constexpr TaskTraits constructor in chrome.

chrome/browser/chromeos/login/version_info_updater.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/login/version_info_updater.h"
 
 #include <vector>
 
 #include "ash/strings/grit/ash_strings.h"
 #include "base/bind.h"
@@ skipping 44 matching lines @@
       g_browser_process->platform_part()->browser_policy_connector_chromeos();
   policy::DeviceCloudPolicyManagerChromeOS* policy_manager =
       connector->GetDeviceCloudPolicyManager();
   if (policy_manager)
     policy_manager->core()->store()->RemoveObserver(this);
 }
 
 void VersionInfoUpdater::StartUpdate(bool is_official_build) {
   if (base::SysInfo::IsRunningOnChromeOS()) {
     base::PostTaskWithTraitsAndReplyWithResult(
-        FROM_HERE, base::TaskTraits().MayBlock().WithPriority(
-                       base::TaskPriority::BACKGROUND),
+        FROM_HERE, {base::MayBlock(), base::TaskPriority::BACKGROUND},
         base::Bind(&version_loader::GetVersion,
                    is_official_build ? version_loader::VERSION_SHORT_WITH_DATE
                                      : version_loader::VERSION_FULL),
         base::Bind(&VersionInfoUpdater::OnVersion,
                    weak_pointer_factory_.GetWeakPtr()));
   } else {
     UpdateVersionLabel();
   }
 
   policy::BrowserPolicyConnectorChromeOS* connector =
@@ skipping 72 matching lines @@
 
 void VersionInfoUpdater::OnStoreLoaded(policy::CloudPolicyStore* store) {
   UpdateEnterpriseInfo();
 }
 
 void VersionInfoUpdater::OnStoreError(policy::CloudPolicyStore* store) {
   UpdateEnterpriseInfo();
 }
 
 }  // namespace chromeos