Re: [w3c/payment-request] Dont block UI if .updateWith() not called (closes #589) (#591)

marcoscaceres commented on this pull request.



>            <li>
-            <a>Fire an event</a> named <var>name</var> at <var>request</var>
-            using <a>PaymentRequestUpdateEvent</a>.
+            <a data-cite="!DOM#concept-event-dispatch">Dispatch</a>
+            <var>event</var> at <var>request</var>.
+          </li>
+          <li data-link-for="PaymentRequestUpdateEvent">If
+          <var>event</var>.<a>[[\waitForUpdate]]</a> is true, disable any part
+          of the user interface that could cause another update event to be
+          fired. Wait for <var>event</var>.<a>updateWith()</a> method's
+          <var>detailsPromise</var> to settle.

Agree. I wasn't sure if it would be clear. But if one follows the updateWith() path, it provides all the steps there. 

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