Require JSON serialization checks coming in (#179)

Author: timcappalli

index.html

@@ -594,6 +594,7 @@ <h3>
     <pre class="idl">
     [Exposed=Window, SecureContext]
     interface DigitalCredential : Credential {
+      [Default] object toJSON();
       readonly attribute DOMString protocol;
       [SameObject] readonly attribute object data;
       static boolean userAgentAllowsProtocol(DOMString protocol);
@@ -689,6 +690,14 @@ <h3>
       </li>
       <li>If |requests| is empty, [=exception/throw=] a {{TypeError}}.
       </li>
+      <li>[=List/For each=] |request| of |requests|:
+        <ol>
+          <li>[=serialize a JavaScript value to a JSON string|Serialize=]
+          |request| to a JSON string. [=exception/throw|Re-throw=] any
+          [=exception=].
+          </li>
+        </ol>
+      </li>
       <li>
         <aside class="issue">
           Details of how to actually get the [=digital credential=] are
@@ -738,6 +747,14 @@ <h3>
       </li>
       <li>If |requests| is empty, [=exception/throw=] a {{TypeError}}.
       </li>
+      <li>[=List/For each=] |request| of |requests|:
+        <ol>
+          <li>[=serialize a JavaScript value to a JSON string|Serialize=]
+          |request| to a JSON string. [=exception/throw|Re-throw=] any
+          [=exception=].
+          </li>
+        </ol>
+      </li>
       <li>
         <aside class="issue">
           Details of how to actually issue the [=digital credential=] are