Depend on tc39/ecma262#2316 for incumbent machinery

source

@@ -90474,20 +90474,20 @@ import "https://example.com/foo/../module2.mjs";</code></pre>
   data-x="concept-task">tasks</span>. This section defines the scheduling of calling
   <code>FinalizationRegistry</code> cleanup callbacks.</p>
 
-  <h6><dfn>HostCleanupFinalizationRegistry</dfn>(<var>finalizationRegistry</var>)</h6>
+  <h6><dfn>HostEnqueueFinalizationRegistryCleanupJob</dfn>(<var>finalizationRegistry</var>)</h6>
 
-  <p>The <cite>WeakRef</cite> proposal contains an <span>implementation-defined</span>
-  <span data-x="js-HostCleanupFinalizationRegistry">HostCleanupFinalizationRegistry</span
-  >(<var>finalizationRegistry</var>) abstract operation.
-  User agents must use the following implementation: <ref spec=JSWEAKREF></p>
+  <p>The <cite>WeakRef</cite> proposal contains an <span>implementation-defined</span> <span
+  data-x="js-HostEnqueueFinalizationRegistryCleanupJob">HostEnqueueFinalizationRegistryCleanupJob</span
+  >(<var>finalizationRegistry</var>) abstract operation.  User agents must use the following
+  implementation:</p>
 
   <ol>
    <li>
-    <p><span>Queue a task</span> on the <dfn>garbage collection task source</dfn> to perform the
+    <p><span>Queue a task</span> on the <dfn>JavaScript engine task source</dfn> to perform the
     following steps:</p>
     <ol>
      <li>
-      <p>Let <var>entry</var> be <var>finalizationRegistry</var>.[[CleanupCallback]].[[Realm]]'s
+      <p>Let <var>entry</var> be <var>finalizationRegistry</var>.[[CleanupCallback]].[[Callback]].[[Realm]]'s
       <span data-x="concept-realm-settings-object">environment settings object</span>.</p>
      </li>
 
@@ -90503,30 +90503,11 @@ import "https://example.com/foo/../module2.mjs";</code></pre>
       while the cleanup callback runs.</p>
      </li>
 
-     <li>
-      <p>Let <var>incumbent</var> be some appropriate <span>environment settings object</span>.</p>
-
-      <p class="warning">It is not yet clear how to specify the <span>environment settings
-      object</span> that should be used here. In practice, this means that the <span
-      data-x="concept-incumbent-everything">incumbent</span> concept is not correctly specified
-      while executing a cleanup callback. See <a
-      href="https://github.com/whatwg/html/pull/4571#pullrequestreview-342188911">discussion in pull
-      request #4571</a>.</p>
-     </li>
-
-     <li>
-      <p><span>Prepare to run a callback</span> with <var>incumbent</var>.</p>
-     </li>
-
      <li>
       <p>Let <var>result</var> be the result of performing
       <span>CleanupFinalizationRegistry</span>(<var>finalizationRegistry</var>).</p>
      </li>
 
-     <li>
-      <p><span>Clean up after running a callback</span> with <var>incumbent</var>.</p>
-     </li>
-
      <li>
       <p><span>Clean up after running script</span> with <var>entry</var>.</p>
      </li>