Use constexpr TaskTraits constructor in content.

content/browser/devtools/protocol/page_handler.cc

Index: content/browser/devtools/protocol/page_handler.cc
diff --git a/content/browser/devtools/protocol/page_handler.cc b/content/browser/devtools/protocol/page_handler.cc
index def6fe326213508213832bbc40f22c43e8424a6f..d4bc036be4ceba26772e33b95041934d4a4df493 100644
--- a/content/browser/devtools/protocol/page_handler.cc
+++ b/content/browser/devtools/protocol/page_handler.cc
@@ -517,8 +517,7 @@ void PageHandler::ScreencastFrameCaptured(cc::CompositorFrameMetadata metadata,
     return;
   }
   base::PostTaskWithTraitsAndReplyWithResult(
-      FROM_HERE, base::TaskTraits().WithShutdownBehavior(
-                     base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN),
+      FROM_HERE, {base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
       base::Bind(&EncodeImage, gfx::Image::CreateFrom1xBitmap(bitmap),
                  screencast_format_, screencast_quality_),
       base::Bind(&PageHandler::ScreencastFrameEncoded,