Android WebView 'Browswer is out of date or some of its features are disabled'

Question

I am trying to load a Website in my app using WebView. Here's my webView set

    webView.getSettings().setJavaScriptEnabled(true);
    webView.getSettings().setAppCacheEnabled(true);
    webView.getSettings().setUserAgentString("Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.4) Gecko/20100101 Firefox/4.0");

    webView.setWebChromeClient(new WebChromeClient(){
        @Override
        public void onReceivedTitle(WebView view, String title) {
            getWindow().setTitle(title); 
        }
    });

    webView.setWebViewClient(new WebViewClient());
    webView.loadUrl("http://www.example.com/");

The webView is loading the website but it says

Your browser is out of date or some of it's features may be disabled

Can anyone help me with the settings of webView?