Use constexpr TaskTraits constructor in content.

content/renderer/gpu/render_widget_compositor.cc

 // Copyright (c) 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 "content/renderer/gpu/render_widget_compositor.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <limits>
@@ skipping 229 matching lines @@
   params.client = client;
   params.settings = &settings;
   params.task_graph_runner = deps->GetTaskGraphRunner();
   params.main_task_runner = deps->GetCompositorMainThreadTaskRunner();
   params.mutator_host = mutator_host;
   if (base::TaskScheduler::GetInstance()) {
     // The image worker thread needs to allow waiting since it makes discardable
     // shared memory allocations which need to make synchronous calls to the
     // IO thread.
     params.image_worker_task_runner = base::CreateSequencedTaskRunnerWithTraits(
-        base::TaskTraits()
-            .WithPriority(base::TaskPriority::BACKGROUND)
-            .WithShutdownBehavior(
-                base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-            .WithBaseSyncPrimitives());
+        {base::WithBaseSyncPrimitives(), base::TaskPriority::BACKGROUND,
+         base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN});
   }
   if (!is_threaded) {
     // Single-threaded layout tests.
     layer_tree_host =
         cc::LayerTreeHost::CreateSingleThreaded(single_thread_client, &params);
   } else {
     layer_tree_host = cc::LayerTreeHost::CreateThreaded(
         deps->GetCompositorImplThreadTaskRunner(), &params);
   }
 
@@ skipping 884 matching lines @@
 void RenderWidgetCompositor::SetContentSourceId(uint32_t id) {
   layer_tree_host_->SetContentSourceId(id);
 }
 
 void RenderWidgetCompositor::SetLocalSurfaceId(
     const cc::LocalSurfaceId& local_surface_id) {
   layer_tree_host_->SetLocalSurfaceId(local_surface_id);
 }
 
 }  // namespace content