chrome.webRequest.onBeforeRequest.addListener(
function(request) {
var url = request.url.replace('ajax.googleapis.com', 'cdnjs.loli.net');
url = url.replace('themes.googleusercontent.com', 'google-themes.lug.ustc.edu.cn');
return {redirectUrl: url};
},
{
urls: [
"*://ajax.googleapis.com/*",
"*://themes.googleusercontent.com/*"
]
},
["blocking"]
);