Use constexpr TaskTraits constructor in content.

content/browser/devtools/protocol/page_handler.cc

 // Copyright 2014 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/browser/devtools/protocol/page_handler.h"
 
 #include <algorithm>
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 499 matching lines @@
       --capture_retry_count_;
       base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
           FROM_HERE, base::Bind(&PageHandler::InnerSwapCompositorFrame,
                                 weak_factory_.GetWeakPtr()),
           base::TimeDelta::FromMilliseconds(kFrameRetryDelayMs));
     }
     --frames_in_flight_;
     return;
   }
   base::PostTaskWithTraitsAndReplyWithResult(
-      FROM_HERE, base::TaskTraits().WithShutdownBehavior(
-                     base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN),
+      FROM_HERE, {base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
       base::Bind(&EncodeImage, gfx::Image::CreateFrom1xBitmap(bitmap),
                  screencast_format_, screencast_quality_),
       base::Bind(&PageHandler::ScreencastFrameEncoded,
                  weak_factory_.GetWeakPtr(), base::Passed(&metadata),
                  base::Time::Now()));
 }
 
 void PageHandler::ScreencastFrameEncoded(cc::CompositorFrameMetadata metadata,
                                          const base::Time& timestamp,
                                          const std::string& data) {
@@ skipping 43 matching lines @@
 Response PageHandler::StopLoading() {
   WebContentsImpl* web_contents = GetWebContents();
   if (!web_contents)
     return Response::InternalError();
   web_contents->Stop();
   return Response::OK();
 }
 
 }  // namespace protocol
 }  // namespace content