Use constexpr TaskTraits constructor in chrome.

chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc

Index: chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
diff --git a/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc b/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
index 84e51467fa976868b24f14c29b30a8a710cab928..ea94a20e64814634bdd05d8f251dec9c28b085e1 100644
--- a/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
+++ b/chrome/browser/android/offline_pages/evaluation/offline_page_evaluation_bridge.cc
@@ -131,7 +131,7 @@ std::unique_ptr<KeyedService> GetTestingRequestCoordinator(
     std::unique_ptr<OfflinerPolicy> policy,
     std::unique_ptr<Offliner> offliner) {
   scoped_refptr<base::SequencedTaskRunner> background_task_runner =
-      base::CreateSequencedTaskRunnerWithTraits(base::TaskTraits().MayBlock());
+      base::CreateSequencedTaskRunnerWithTraits({base::MayBlock()});
   Profile* profile = Profile::FromBrowserContext(context);
   base::FilePath queue_store_path =
       profile->GetPath().Append(chrome::kOfflinePageRequestQueueDirname);