Use constexpr TaskTraits constructor in chrome.

chrome/browser/thumbnails/content_based_thumbnailing_algorithm.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 "chrome/browser/thumbnails/content_based_thumbnailing_algorithm.h"
 
 #include <stddef.h>
 
 #include "base/metrics/histogram_macros.h"
 #include "base/task_scheduler/post_task.h"
@@ skipping 75 matching lines @@
          context->clip_result == CLIP_RESULT_TALLER_THAN_WIDE ||
          context->clip_result == CLIP_RESULT_NOT_CLIPPED ||
          context->clip_result == CLIP_RESULT_SOURCE_SAME_AS_TARGET);
 
     callback.Run(*context.get(), source_bitmap);
     return;
   }
 
   base::PostTaskWithTraits(
       FROM_HERE,
-      base::TaskTraits()
-          .WithPriority(base::TaskPriority::BACKGROUND)
-          .WithShutdownBehavior(base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN),
+      {base::TaskPriority::BACKGROUND,
+       base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN},
       base::Bind(&CreateRetargetedThumbnail, source_bitmap,
                  target_thumbnail_size, context, callback));
 }
 
 // static
 SkBitmap ContentBasedThumbnailingAlgorithm::PrepareSourceBitmap(
     const SkBitmap& received_bitmap,
     const gfx::Size& thumbnail_size,
     ThumbnailingContext* context) {
   gfx::Size resize_target;
@@ skipping 110 matching lines @@
   } else {
     clipping_rect = gfx::Rect(source_size);
     target_size->SetSize(source_size.width() / 2, source_size.height() / 2);
     *clip_result = CLIP_RESULT_NOT_CLIPPED;
   }
 
   return clipping_rect;
 }
 
 }  // namespace thumbnails