HTML5 File API NotSupportedError

I can't get the File API system to work using any of the tutorials that I've found. I've tried all of these in order to get the code to work. ``` window.storageInfo.requestQuota(PERSISTENT, size, success, error); navigator.webkitPersistentStorage.requestQuota(size, success, error); window.requestFileSystem(window.PERSISTENT, size, success, error); ``` The first two give me this error: NotSupportedError: The implementation did not support the requested type of object or operation. And the last one gives me this error: SecurityError: It was determined that certain files are unsafe for access within a Web application, or that too many calls are being made on file resources. If anyone knows how to fix this, the I would appreciate it. I tried everything I can possibly think of. I thought (--allow-file-access-from-files) might be the solution, but it didn't fix anything.