title: Failed to execute 'registerProtocolHandler' on 'Navigator': The scheme 'message' doesn't belong to the scheme whitelist
body: <p>I am trying to use,</p>
  
  <pre><code>navigator.registerProtocolHandler("message",
                                    "http://localhost/?uri=%s",
                                    "message handler")
  </code></pre>
  
  <p>But getting this error,</p>
  
  <pre><code>Failed to execute 'registerProtocolHandler' on 'Navigator': The scheme 'message' doesn't belong to the scheme whitelist.
  </code></pre>
  
  <p>Actually I have mobile app. The server returning custom protocol to mobile. I am testing this on mobile.</p>