async function openViewer(lhr) {
  const windowName = 'viewer-' + computeWindowNameSuffix(lhr);
  const url = getAppsOrigin() + '/viewer/';
  await openTabWithUrlData({lhr}, url, windowName);
}
Opens a new tab to the online viewer and sends the local page's JSON results
to the online viewer using URL.fragment
@param {LH.Result} lhr
@protected