How can i unblock cors via chrome webrequest api

Question

I would like to unblock cors in all requests that occurs in www.example.com via xhr for example in it i request to www.google.com how can i add response headers for it like Access-Control-Allow-Origin: www.example.com

    
var corsorg = {
        name: "Access-Control-Allow-Origin",
        value: "https://www.example.com"
      };
     var corstrue = {
        name: "Access-Control-Allow-Credentials",
        value: "true"
      };
      e.responseHeaders.push(corsorg);
      e.responseHeaders.push(corstrue);
     console.log(e);
 },
  {urls: ["<all_urls>"]},
  ["blocking", "responseHeaders"]
);