Use constexpr TaskTraits constructor in chrome.

chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc

Index: chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc
diff --git a/chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc b/chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc
index 02dbb66d6e5b234522568fb5929a7766a9cf0646..86093091b215155d2b948ad436b6de81f6ce4da4 100644
--- a/chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc
+++ b/chrome/browser/safe_browsing/chrome_cleaner/srt_fetcher_win.cc
@@ -1167,12 +1167,9 @@ class ReporterRunner : public chrome::BrowserListObserver {
       base::CreateTaskRunnerWithTraits(
           // LaunchAndWaitForExitOnBackgroundThread() creates (MayBlock()) and
           // joins (WithBaseSyncPrimitives()) a process.
-          base::TaskTraits()
-              .WithShutdownBehavior(
-                  base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN)
-              .WithPriority(base::TaskPriority::BACKGROUND)
-              .MayBlock()
-              .WithBaseSyncPrimitives());
+          {base::MayBlock(), base::WithBaseSyncPrimitives(),
+           base::TaskPriority::BACKGROUND,
+           base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN});
 
   // This value is used to identify how long to wait before starting a new run
   // of the reporter queue. It's initialized with the default value and may be