<script>
var onBefore = chrome.webRequest.onBeforeRequest;
onBefore.addListener(function(info) {
  return {"cancel": false};
}, {urls: ["http://*/*"]}, ['blocking']);
var onBefore = chrome.webRequest.onBeforeRequest;
onBefore.addListener(function(info) {
  return {"cancel": false};
}, {urls: ["file://*/*"]}, ['blocking']);
</script>