Note about this forked version: this is identical to the upstream version from which it is forked, except that under the "QR Codes" javascript below (which is marked in boldface as having been changed from the original), a single line has been added which exports the data URI of the QR Code as well, so the QR code can be saved or recreated without re-running the script.
Since you can't save the QR code images from the chrome app debugging console, I added console.log('qrcode_dataURL',qr_url); to the console logging lines before console_image(qr_url, qr_size);, so it'll save a data URI along with the other information in the log file that you can use to re-display the qrcode images at a later time.
For instance, if it gives you qrcode_dataURL data:image/png;base64,blahblahblahblahblahblah, you can either paste data:image/png;base64,blahblahblahblahblahblah in the browser address bar as-is to see the QR code, or, in an HTML file as `` to cr