Payment Request: use remote origin instead for policy test (#47015)

permissions-policy/payment-allowed-by-permissions-policy-attribute-redirect-on-load.https.sub.html

@@ -3,12 +3,13 @@
   <script src=/resources/testharness.js></script>
   <script src=/resources/testharnessreport.js></script>
   <script src=/permissions-policy/resources/permissions-policy.js></script>
+  <script src=/common/get-host-info.sub.js></script>
   <script>
   'use strict';
   var relative_path = '/permissions-policy/resources/permissions-policy-payment.html';
   var base_src = '/permissions-policy/resources/redirect-on-load.html#';
   var same_origin_src = base_src + relative_path;
-  var cross_origin_src = base_src + 'https://{{domains[www]}}:{{ports[https][0]}}' +
+  var cross_origin_src = base_src + get_host_info().REMOTE_ORIGIN +
     relative_path;
   var header = 'permissions policy allow="payment"';