Use constexpr TaskTraits constructor in content.

content/shell/browser/shell_url_request_context_getter.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 "content/shell/browser/shell_url_request_context_getter.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 240 matching lines @@
     // ShellContentBrowserClient::IsHandledURL().
     InstallProtocolHandlers(job_factory.get(), &protocol_handlers_);
     bool set_protocol = job_factory->SetProtocolHandler(
         url::kDataScheme, base::WrapUnique(new net::DataProtocolHandler));
     DCHECK(set_protocol);
 #if !BUILDFLAG(DISABLE_FILE_SUPPORT)
     set_protocol = job_factory->SetProtocolHandler(
         url::kFileScheme,
         base::MakeUnique<net::FileProtocolHandler>(
             base::CreateTaskRunnerWithTraits(
-                base::TaskTraits()
-                    .MayBlock()
-                    .WithPriority(base::TaskPriority::USER_VISIBLE)
-                    .WithShutdownBehavior(
-                        base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN))));
+                {base::MayBlock(), base::TaskPriority::USER_VISIBLE,
+                 base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN})));
     DCHECK(set_protocol);
 #endif
 
     // Set up interceptors in the reverse order.
     std::unique_ptr<net::URLRequestJobFactory> top_job_factory =
         std::move(job_factory);
     for (auto i = request_interceptors_.rbegin();
          i != request_interceptors_.rend(); ++i) {
       top_job_factory.reset(new net::URLRequestInterceptingJobFactory(
           std::move(top_job_factory), std::move(*i)));
     }
     request_interceptors_.clear();
 
     storage_->set_job_factory(std::move(top_job_factory));
   }
 
   return url_request_context_.get();
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
     ShellURLRequestContextGetter::GetNetworkTaskRunner() const {
   return BrowserThread::GetTaskRunnerForThread(BrowserThread::IO);
 }
 
 net::HostResolver* ShellURLRequestContextGetter::host_resolver() {
   return url_request_context_->host_resolver();
 }
 
 }  // namespace content