Liferay 7.0 Piwik/Matomo integration

matomo.js

<!-- Piwik -->
<script type="text/javascript">
    var _paq = _paq || [];
    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
    _paq.push(['trackPageView']);
    _paq.push(['enableLinkTracking']);
    (function () {
        var u = "//example.com/";
        _paq.push(['setTrackerUrl', u + 'piwik.php']);
        _paq.push(['setSiteId', '1']);
        var d = document, g = d.createElement('script'), s = d.getElementsByTagName('script')[0];
        g.type = 'text/javascript';
        g.async = true;
        g.defer = true;
        g.src = u + 'piwik.js';
        s.parentNode.insertBefore(g, s);
    })();
 
 (function(history){
  var pushState = history.pushState;
  history.pushState = function(state) {
   if (typeof history.onpushstate == "function") {
    history.onpushstate({state: state});
   }
   var returnedVal = pushState.apply(history, arguments);
   var currentUrl = location.href;
   _paq.push(['setReferrerUrl', currentUrl]);
   _paq.push(['setCustomUrl', currentUrl]);
   _paq.push(['setDocumentTitle', arguments[1]]);
   _paq.push(['trackPageView']);
   return returnedVal;
  }
 })(window.history);
 
</script>
<!-- End Piwik Code -->