title: disable chrome extension's badge
body: <p>I am developing a chrome extension that shows notifications.<br>
  I am showing the notifications using these functions <code>chrome.browserAction.setBadgeBackgroundColor</code> and <code>chrome.browserAction.setBadgeText</code>.<br>
  This is what it looks like:</p>
  
  <p><img src="https://i.stack.imgur.com/xTNfH.png" alt=""></p>
  
  <p>After the user have seen the notifications I want to remove this badge.</p>
  
  <p>I have tried to make it transparent but this was the result:</p>
  
  <p><img src="https://i.stack.imgur.com/PlG6s.png" alt=""></p>
  
  <p>Can anyone help me how to remove the badge, or if there is another way that makes what I want?</p>
  
  <p><br>
  <strong>Solution</strong>
  <br>When writing an empty text, the badge goes away.</p>