Use constexpr TaskTraits constructor in chrome.

chrome/browser/ui/webui/chromeos/drive_internals_ui.cc

Index: chrome/browser/ui/webui/chromeos/drive_internals_ui.cc
diff --git a/chrome/browser/ui/webui/chromeos/drive_internals_ui.cc b/chrome/browser/ui/webui/chromeos/drive_internals_ui.cc
index ac624b64236a66e987c00bfed5968b30f1e66ead..c13d04e71fed612759b57ee28a94a09a4a73d1a9 100644
--- a/chrome/browser/ui/webui/chromeos/drive_internals_ui.cc
+++ b/chrome/browser/ui/webui/chromeos/drive_internals_ui.cc
@@ -671,8 +671,7 @@ void DriveInternalsWebUIHandler::UpdateGCacheContentsSection() {
   base::ListValue* gcache_contents = new base::ListValue;
   base::DictionaryValue* gcache_summary = new base::DictionaryValue;
   base::PostTaskWithTraitsAndReply(
-      FROM_HERE, base::TaskTraits().MayBlock().WithPriority(
-                     base::TaskPriority::USER_VISIBLE),
+      FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
       base::Bind(&GetGCacheContents, root_path, gcache_contents,
                  gcache_summary),
       base::Bind(&DriveInternalsWebUIHandler::OnGetGCacheContents,
@@ -711,8 +710,7 @@ void DriveInternalsWebUIHandler::UpdateLocalStorageUsageSection() {
   if (PathService::Get(base::DIR_HOME, &home_path)) {
     base::DictionaryValue* local_storage_summary = new base::DictionaryValue;
     base::PostTaskWithTraitsAndReply(
-        FROM_HERE, base::TaskTraits().MayBlock().WithPriority(
-                       base::TaskPriority::USER_VISIBLE),
+        FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
         base::Bind(&GetFreeDiskSpace, home_path, local_storage_summary),
         base::Bind(&DriveInternalsWebUIHandler::OnGetFreeDiskSpace,
                    weak_ptr_factory_.GetWeakPtr(),