Use constexpr TaskTraits constructor in chrome.

chrome/browser/prerender/prerender_test_utils.cc

 // Copyright (c) 2012 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/prerender/prerender_test_utils.h"
 
 #include <memory>
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 44 matching lines @@
 class MockHTTPJob : public net::URLRequestMockHTTPJob {
  public:
   MockHTTPJob(net::URLRequest* request,
               net::NetworkDelegate* delegate,
               const base::FilePath& file)
       : net::URLRequestMockHTTPJob(
             request,
             delegate,
             file,
             base::CreateTaskRunnerWithTraits(
-                base::TaskTraits()
-                    .MayBlock()
-                    .WithPriority(base::TaskPriority::BACKGROUND)
-                    .WithShutdownBehavior(
-                        base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN))) {}
+                {base::MayBlock(), base::TaskPriority::BACKGROUND,
+                 base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN})) {}
 
   void set_start_callback(const base::Closure& start_callback) {
     start_callback_ = start_callback;
   }
 
   void Start() override {
     if (!start_callback_.is_null())
       start_callback_.Run();
     net::URLRequestMockHTTPJob::Start();
   }
@@ skipping 113 matching lines @@
       net::NetworkDelegate* network_delegate) const override {
     if (first_run_) {
       first_run_ = false;
       if (!callback_.is_null())
         callback_.Run(request);
       return new HangingURLRequestJob(request, network_delegate);
     }
     return new net::URLRequestMockHTTPJob(
         request, network_delegate, file_,
         base::CreateTaskRunnerWithTraits(
-            base::TaskTraits()
-                .MayBlock()
-                .WithPriority(base::TaskPriority::BACKGROUND)
-                .WithShutdownBehavior(
-                    base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN)));
+            {base::MayBlock(), base::TaskPriority::BACKGROUND,
+             base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN}));
   }
 
  private:
   base::FilePath file_;
   base::Callback<void(net::URLRequest*)> callback_;
   mutable bool first_run_;
 };
 
 // An ExternalProtocolHandler that blocks everything and asserts it never is
 // called.
@@ skipping 616 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   content::BrowserThread::PostTask(
       content::BrowserThread::IO, FROM_HERE,
       base::BindOnce(&CreateHangingFirstRequestInterceptorOnIO, url, file,
                      callback_io));
 }
 
 }  // namespace test_utils
 
 }  // namespace prerender