shared worker cross-origin isolated

source

@@ -89500,7 +89500,6 @@ import "https://example.com/foo/../module2.mjs";</code></pre>
 
   <p>An <span>agent cluster</span> has an associated <dfn>cross-origin isolated</dfn> (a boolean),
   which is initially false.</p>
-  <!-- TODO: maybe this should move into the eventual COEP PR as it impacts shared workers? -->
 
 
   <div w-nodev>
@@ -99053,6 +99052,17 @@ interface <dfn>SharedWorkerGlobalScope</dfn> : <span>WorkerGlobalScope</span> {
      <span data-x="obtain an embedder policy">obtaining an embedder policy</span> from
      <var>response</var>.</p></li>
 
+     <li>
+      <p>If <var>worker global scope</var>'s <span
+      data-x="concept-WorkerGlobalScope-embedder-policy">embedder policy</span> is "<code
+      data-x="coep-require-corp">require-corp</code>" and <var>is shared</var> is true, then set
+      <var>agent</var>'s <span>agent cluster</span>'s <span>cross-origin isolated</span> to
+      true.</p>
+
+      <p class="XXX">This really ought to be set when the agent cluster is created, which requires a
+      redesign of this section.</p>
+     </li>
+
      <li><p>If the result of <span data-x="check a global object's embedder policy">checking a
      global object's embedder policy</span> with <var>worker global scope</var>, <var>owner</var>,
      and <var>response</var> is false, then set <var>response</var> to a <span>network