Handling PaymentResponse.prototype.onpayerdetailchange events

Each button will bring up the Payment Request UI window. When shown the payment sheet, use any details and hit pay.

When asked to retry the payment:

  1. Change payer's name to "pass".

  2. Change payer's email to "pass@pass.pass".

  3. Change payer's phone to "+1-800-000-0000".

If you find a buggy test, please file a bug and tag one of the owners.