title: New google identity service change
body: <p>I am using google identity services(<a href="https://developers.google.com/identity/gsi/web/reference/js-reference" rel="nofollow noreferrer">https://developers.google.com/identity/gsi/web/reference/js-reference</a>) for sign in to my web game application.
  Initialization completed using below code.</p>
  <p>google.accounts.id.initialize({
  client_id: 'YOUR_GOOGLE_CLIENT_ID',
  callback: handleCredentialResponse
  });</p>
  <p>I would like to invoke google promt popup via  button click, because I can't use the default button in game. We followed the same guidelines to create a new one.
  I tried to use</p>
  <pre><code>google.accounts.id.prompt();
  </code></pre>
  <p>,But it work only in the case of active session. Pls help me here
  Thanks in advance.</p>