chromium/components/test/data/payments/maxpay.test/README

The tests in this folder is meant for both manual test and automated test, for
both Mobile and Desktop. To run these tests manually, take the following steps:
* start a http server to serve the directory "components/test/data/payments/"
* start Chrome with "--ignore-certificate-errors"
* for mobile, setup port-forwarding if necessary
* use the browser to open merchant.html