title: Profiling iOS web app with Safari has no profiles
body: <p>I've been looking at profiling an iOS application (WKWebView) with Safari. I've used the Timelines section and gotten a bunch of records. The problem is that the record content is completely useless. It basically just says that I have a bunch of events, which were listened to by jQuery, that took a long time to finish. </p>
  
  <p>It doesn't state why that's actually the case at all, or show the time spent in the call tree (or show the call tree at all).</p>
  
  <p>How can I convince Safari to actually profile the javascript involved instead of just telling me that it is slow?</p>