Use constexpr TaskTraits constructor in chrome.

chrome/browser/chromeos/first_run/goodies_displayer.cc

 // Copyright 2015 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/first_run/goodies_displayer.h"
 
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/task_scheduler/post_task.h"
@@ skipping 66 matching lines @@
 }
 
 // If Goodies page hasn't been shown yet, and Chromebook isn't too old, create
 // GoodiesDisplayer to observe BrowserList.  Return |true| if checking age.
 // static
 bool GoodiesDisplayer::Init() {
   const bool can_show = g_browser_process->local_state()->GetBoolean(
       prefs::kCanShowOobeGoodiesPage);
   if (can_show) {
     base::PostTaskWithTraitsAndReplyWithResult(
-        FROM_HERE, base::TaskTraits().MayBlock().WithPriority(
-                       base::TaskPriority::BACKGROUND),
+        FROM_HERE, {base::MayBlock(), base::TaskPriority::BACKGROUND},
         base::Bind(&CheckGoodiesPrefAgainstOobeTimestamp),
         base::Bind(&UpdateGoodiesPrefCantShow));
   }
   return can_show;
 }
 
 // static
 void GoodiesDisplayer::InitForTesting(GoodiesDisplayerTestInfo* test_info) {
   CHECK(!g_test_info) << "GoodiesDisplayer::InitForTesting called twice";
   g_test_info = test_info;
@@ skipping 44 matching lines @@
   base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE, base::Bind(&Delete));
 }
 
 GoodiesDisplayerTestInfo::GoodiesDisplayerTestInfo()
     : days_since_oobe(0), setup_complete(false) {}
 
 GoodiesDisplayerTestInfo::~GoodiesDisplayerTestInfo() {}
 
 }  // namespace first_run
 }  // namespace chromeos