Use constexpr TaskTraits constructor in chrome.

chrome/browser/win/jumplist.cc

 // Copyright 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/win/jumplist.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 356 matching lines @@
 
 JumpList::JumpListData::~JumpListData() {}
 
 JumpList::JumpList(Profile* profile)
     : RefcountedKeyedService(content::BrowserThread::GetTaskRunnerForThread(
           content::BrowserThread::UI)),
       profile_(profile),
       jumplist_data_(new base::RefCountedData<JumpListData>),
       task_id_(base::CancelableTaskTracker::kBadTaskId),
       update_jumplist_task_runner_(base::CreateCOMSTATaskRunnerWithTraits(
-          base::TaskTraits()
-              .WithPriority(base::TaskPriority::USER_VISIBLE)
-              .WithShutdownBehavior(
-                  base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-              .MayBlock())),
+          {base::MayBlock(), base::TaskPriority::USER_VISIBLE,
+           base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN})),
       delete_jumplisticons_task_runner_(
           base::CreateSequencedTaskRunnerWithTraits(
-              base::TaskTraits()
-                  .WithPriority(base::TaskPriority::BACKGROUND)
-                  .WithShutdownBehavior(
-                      base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-                  .MayBlock())),
+              {base::MayBlock(), base::TaskPriority::BACKGROUND,
+               base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN})),
       weak_ptr_factory_(this) {
   DCHECK(Enabled());
   // To update JumpList when a tab is added or removed, we add this object to
   // the observer list of the TabRestoreService class.
   // When we add this object to the observer list, we save the pointer to this
   // TabRestoreService object. This pointer is used when we remove this object
   // from the observer list.
   sessions::TabRestoreService* tab_restore_service =
       TabRestoreServiceFactory::GetForProfile(profile_);
   if (!tab_restore_service)
@@ skipping 305 matching lines @@
 void JumpList::TopSitesLoaded(history::TopSites* top_sites) {
 }
 
 void JumpList::TopSitesChanged(history::TopSites* top_sites,
                                ChangeReason change_reason) {
   top_sites->GetMostVisitedURLs(
       base::Bind(&JumpList::OnMostVisitedURLsAvailable,
                  weak_ptr_factory_.GetWeakPtr()),
       false);
 }