[Documentation Missing] Add JSDoc

[vinitshahdeo]

There are many functions in background.js which are using chrome.cookies API. Adding a short description before each function will make the code more readable.

For example,

/*
 *
 * @description event listener which notifies whenever cookie's properties are updated
 */
function onCookieChanged(){
  chrome.cookies.onChanged.addListener(function(cookies){
      console.log("cookies are being changed ", cookies.cookie.domain);
      console.log(cookies);
  });
}

• Add JSDoc for each function.
• Do not make any changes to other files.
• Write assumptions if any.

Please refer to JSDoc and chrome.cookies API.

[hotdang-ca]

Happy to grab this one.