chrome.webRequest.onBeforeRequest.addListener(function (details) {
    switch (details.url) {
        case "https://vtop.vit.ac.in/student/images/round_orange.gif":
            return {
                redirectUrl: "https://res.cloudinary.com/dadfowug4/image/upload/v1479314802/nAnJHcz_kt2did.png"