chrome.tabs.onUpdated.addListener(checkForValidUrl);
function checkForValidUrl(tabId, changeInfo, tab) {
if (tab.url.indexOf(\'https\') > -1) {
var ta
This filesystem API does not appear to actually write a true "file" to your hard disk.
It seems to store a file within a sandboxed safe zone in the browser.
You'll have to write a quick and dirty little file manager (or find one out there) to manage the files for a given web app. You can also try visiting filesystem:// to see all the files that your app has created.