Use constexpr TaskTraits constructor in ui.

ui/events/ozone/evdev/libgestures_glue/gesture_feedback.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 "ui/events/ozone/evdev/libgestures_glue/gesture_feedback.h"
 
 #include <stddef.h>
 #include <time.h>
 
 #include "base/bind.h"
@@ skipping 216 matching lines @@
       std::string touch_evdev_log_filename = GenerateEventLogName(
           out_dir, "evdev_input_events_", now, converter->id());
       base::Move(base::FilePath(kInputEventsLogFile),
                  base::FilePath(touch_evdev_log_filename));
       log_paths->push_back(base::FilePath(touch_evdev_log_filename));
     }
   }
 
   // Compress touchpad/mouse logs asynchronously
   base::PostTaskWithTraitsAndReply(
-      FROM_HERE, base::TaskTraits()
-                     .WithShutdownBehavior(
-                         base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-                     .WithPriority(base::TaskPriority::BACKGROUND)
-                     .MayBlock(),
+      FROM_HERE,
+      {base::MayBlock(), base::TaskPriority::BACKGROUND,
+       base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
       base::Bind(&CompressDumpedLog, base::Passed(&log_paths_to_be_compressed)),
       base::Bind(reply, base::Passed(&log_paths)));
 }
 
 }  // namespace ui