title: What is the Chrome Dev Tools "Hit Test" timeline entry?
body: <p>When looking at a Chrome Dev Tools timeline I noticed that there was a "Hit Test" entry every time somethings happens:</p>
  
  <p><a href="https://i.stack.imgur.com/Jdoae.png"><img src="https://i.stack.imgur.com/Jdoae.png" alt="enter image description here"></a></p>
  
  <p>Does anyone know what it is? I've done my googling, but am still at a loss.</p>
  
  <p>Thanks!</p>