Custom protocol check not working for chrome

I need to check if the custom protocol available using browser and if not need to show a message . I have implemented this according to https://gist.github.com/aaronk6/d801d750f14ac31845e8 this example and did some changes as well on Firefox(set Firefox to go through chrome section) . This was working fine. Today i saw this is not working for chrome but working for Firefox .Appreciate if you can tell me what need to correct for Chrome.

function LinkClicked() {
        launchUri($(this).attr("href"), function () {
            // SUCCESS APPLICATION INSTALLED
        }, function () {
            // PROTOCOL NOT REGISTERD IN REGISTRY
            setTimeout(showAppInstallWarningMessage, 4000);
        }, function () {
            // STATUS CANNOT IDENTIFY
            setTimeout(showAppInstallWarningMessage, 4000);
        });
    }





function launchUri(uri, successCallback, noHandlerCallback, unknownCallback) {
    var res, parent, popup, iframe, timer, timeout, blurHandler, timeoutHandler, browser;

    function callback(cb) {
        if (typeof cb === 'function') cb();
    }

    function createHiddenIframe(parent) {
        var iframe;
        if (!parent) parent = document.body;
        iframe = document.createElement('iframe');
        iframe.style.display = 'none';
        parent.appendChild(iframe);
        return iframe;
    }

    function removeHiddenIframe(parent) {
        if (!iframe) return;
        if (!parent) parent = document.body;
        parent.removeChild(iframe);
        iframe = null;
    }

    browser = { isChrome: false, isFirefox: false, isIE: false };

    if (window.chrome && !navigator.userAgent.match(/Opera|OPR\//)) {
        browser.isChrome = true;
    } else if (typeof InstallTrigger !== 'undefined') {
        browser.isFirefox = true;
    } else if ('ActiveXObject' in window) {
        browser.isIE = true;
    }

    // EVALUATE msLaunchUri for IE 10+ browser in  Windows 8+
    if (navigator.msLaunchUri) {
        navigator.msLaunchUri(uri, successCallback, noHandlerCallback);
    }
    // Evaluating Blur-hack Chrome and FireFox
    else if (browser.isChrome || browser.isFirefox) {
        blurHandler = function () {
            window.clearTimeout(timeout);
            window.removeEventListener('blur', blurHandler);
            callback(successCallback);
        };
        timeoutHandler = function () {
            window.removeEventListener('blur', blurHandler);
            callback(noHandlerCallback);
        };
        window.addEventListener('blur', blurHandler);
        timeout = window.setTimeout(timeoutHandler, 500);
        window.location.href = uri;
    }
    else if (browser.isIE) {
        popup = window.open('', 'launcher', 'width=0,height=0');
        popup.location.href = uri;
        try {
            popup.location.href = 'about:blank';
            callback(successCallback);
            timer = window.setInterval(function () {
                popup.close();
                if (popup.closed) window.clearInterval(timer);
            }, 500);
        } catch (e) {
            popup = window.open('about:blank', 'launcher');
            popup.close();
            callback(noHandlerCallback);
        }
    }
    else {
        iframe = createHiddenIframe();
        iframe.contentWindow.location.href = uri;
        window.setTimeout(function () {
            removeHiddenIframe(parent);
            callback(unknownCallback);
        }, 500);
    }
}