Use constexpr TaskTraits constructor in content.

content/browser/dom_storage/dom_storage_context_wrapper.cc

Index: content/browser/dom_storage/dom_storage_context_wrapper.cc
diff --git a/content/browser/dom_storage/dom_storage_context_wrapper.cc b/content/browser/dom_storage/dom_storage_context_wrapper.cc
index be4ffb4c0b619f129745bb2b14a1d742ccb5f950..64964fe9e4fb6df6712067b3958b6b7836c66992 100644
--- a/content/browser/dom_storage/dom_storage_context_wrapper.cc
+++ b/content/browser/dom_storage/dom_storage_context_wrapper.cc
@@ -95,11 +95,9 @@ DOMStorageContextWrapper::DOMStorageContextWrapper(
     // believed to be blocking synchronous IPCs from the renderers:
     // http://crbug.com/665588 (yes we want to fix that bug, but are taking it
     // as an opportunity to experiment with the scheduler).
-    base::TaskTraits dom_storage_traits =
-        base::TaskTraits()
-            .WithShutdownBehavior(base::TaskShutdownBehavior::BLOCK_SHUTDOWN)
-            .MayBlock()
-            .WithPriority(base::TaskPriority::USER_BLOCKING);
+    base::TaskTraits dom_storage_traits = {
+        base::MayBlock(), base::TaskPriority::USER_BLOCKING,
+        base::TaskShutdownBehavior::BLOCK_SHUTDOWN};
     primary_sequence =
         base::CreateSequencedTaskRunnerWithTraits(dom_storage_traits);
     commit_sequence =