@Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
      selendroidWVC.onPageStarted(view, url, favicon);
      WVC.onPageStarted(view, url, favicon);
    }
Unconventional way of adding a Javascript interface but the main reason why I took this way
is that it is working stable compared to the webview.addJavascriptInterface way.
selendroid-server/src/main/java/io/selendroid/server/model/SelendroidWebDriver.java