Use constexpr TaskTraits constructor in remoting.

remoting/protocol/webrtc_video_renderer_adapter.cc

Index: remoting/protocol/webrtc_video_renderer_adapter.cc
diff --git a/remoting/protocol/webrtc_video_renderer_adapter.cc b/remoting/protocol/webrtc_video_renderer_adapter.cc
index cc4c3146afef8afa5c5b5d97ce6848f499b82438..8e660333cdcd050f628321f01398fd297d0f8c94 100644
--- a/remoting/protocol/webrtc_video_renderer_adapter.cc
+++ b/remoting/protocol/webrtc_video_renderer_adapter.cc
@@ -175,8 +175,7 @@ void WebrtcVideoRendererAdapter::HandleFrameOnMainThread(
           webrtc::DesktopSize(frame->width(), frame->height()));
 
   base::PostTaskWithTraitsAndReplyWithResult(
-      FROM_HERE, base::TaskTraits().WithShutdownBehavior(
-                     base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN),
+      FROM_HERE, {base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
       base::Bind(&ConvertYuvToRgb, base::Passed(&frame),
                  base::Passed(&rgb_frame),
                  video_renderer_->GetFrameConsumer()->GetPixelFormat()),