ParseXML = function (data)
{
    var xml = '';

    try
    {
        if (window['DOMParser'])
        {
            var domparser = new DOMParser();
            xml = domparser.parseFromString(data, 'text/xml');
        }
        else
        {
            xml = new ActiveXObject('Microsoft.XMLDOM');
            xml.loadXML(data);
        }
    }
    catch (e)
    {
        xml = null;
    }

    if (!xml || !xml.documentElement || xml.getElementsByTagName('parsererror').length)
    {
        return null;
    }
    else
    {
        return xml;
    }
}
Takes the given data string and parses it as XML.
First tries to use the window.DOMParser and reverts to the Microsoft.XMLDOM if that fails.
The parsed XML object is returned, or `null` if there was an error while parsing the data.

@function Phaser.DOM.ParseXML
@since 3.0.0

@param {string} data - The XML source stored in a string.

@return {?(DOMParser|ActiveXObject)} The parsed XML data, or `null` if the data could not be parsed.