Use constexpr TaskTraits constructor in chromeos.

chromeos/dbus/fake_permission_broker_client.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 "chromeos/dbus/fake_permission_broker_client.h"
 
 #include <fcntl.h>
 #include <stdint.h>
 
 #include "base/bind.h"
@@ skipping 45 matching lines @@
 void FakePermissionBrokerClient::CheckPathAccess(
     const std::string& path,
     const ResultCallback& callback) {
   callback.Run(true);
 }
 
 void FakePermissionBrokerClient::OpenPath(const std::string& path,
                                           const OpenPathCallback& callback,
                                           const ErrorCallback& error_callback) {
   base::PostTaskWithTraits(
-      FROM_HERE, base::TaskTraits()
-                     .WithShutdownBehavior(
-                         base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-                     .MayBlock(),
+      FROM_HERE,
+      {base::MayBlock(), base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
       base::Bind(&chromeos::OpenPath, path, callback, error_callback,
                  base::ThreadTaskRunnerHandle::Get()));
 }
 
 void FakePermissionBrokerClient::RequestTcpPortAccess(
     uint16_t port,
     const std::string& interface,
     int lifeline_fd,
     const ResultCallback& callback) {
   callback.Run(true);
@@ skipping 15 matching lines @@
 }
 
 void FakePermissionBrokerClient::ReleaseUdpPort(
     uint16_t port,
     const std::string& interface,
     const ResultCallback& callback) {
   callback.Run(true);
 }
 
 }  // namespace chromeos