Use constexpr TaskTraits constructor in chrome.

chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.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/safe_browsing/chrome_cleaner/srt_fetcher_win.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 1149 matching lines @@
 
   // The invocations to run next time the SwReporter is run.
   SwReporterQueue pending_invocations_;
 
   base::Version version_;
 
   scoped_refptr<base::TaskRunner> blocking_task_runner_ =
       base::CreateTaskRunnerWithTraits(
           // LaunchAndWaitForExitOnBackgroundThread() creates (MayBlock()) and
           // joins (WithBaseSyncPrimitives()) a process.
-          base::TaskTraits()
-              .WithShutdownBehavior(
-                  base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-              .WithPriority(base::TaskPriority::BACKGROUND)
-              .MayBlock()
-              .WithBaseSyncPrimitives());
+          {base::MayBlock(), base::WithBaseSyncPrimitives(),
+           base::TaskPriority::BACKGROUND,
+           base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN});
 
   // This value is used to identify how long to wait before starting a new run
   // of the reporter queue. It's initialized with the default value and may be
   // changed to a different value when a prompt is pending and the reporter
   // should be run before adding the global error to the Chrome menu.
   int days_between_reporter_runs_ = kDaysBetweenSuccessfulSwReporterRuns;
 
   // This will be true if the current queue of invocations started at a time
   // when logs should be uploaded.
   bool in_logs_upload_period_ = false;
@@ skipping 59 matching lines @@
   return srt_cleaner_key.Open(HKEY_CURRENT_USER, cleaner_key_path.c_str(),
                               KEY_QUERY_VALUE) == ERROR_SUCCESS &&
          srt_cleaner_key.GetValueCount() > 0;
 }
 
 void SetSwReporterTestingDelegate(SwReporterTestingDelegate* delegate) {
   g_testing_delegate_ = delegate;
 }
 
 }  // namespace safe_browsing