title: How do I call a function once after all chrome.cookies.onChange events fire?
body: <p>how do I call a function once after all cookies.onChange events fire, I kown  </p>
  
  <pre><code>chrome.cookies.onChange.addListener  
  </code></pre>
  
  <p>but it call event handler everytime after every cookies get changed, I want to call event handler only once after all events fired.  </p>
  
  <p>How I can do that?  </p>
  
  <p>Thank you!</p>