add initializeSubtree and make innerHTML work

source

@@ -72713,6 +72713,7 @@ interface <dfn interface>CustomElementRegistry</dfn> {
 
   [<span>CEReactions</span>, NewObject] <span>HTMLElement</span> <span data-x="dom-CustomElementRegistry-createElement">createElement</span>(DOMString <var>name</var>);
   [<span>CEReactions</span>, NewObject] <span>Node</span> <span data-x="dom-CustomElementRegistry-cloneSubtree">cloneSubtree</span>(<span>Node</span> <var>root</var>);
+  undefined <span data-x="dom-CustomElementRegistry-initializeSubtree">initializeSubtree</span>((<span>Element</span> or <span>ShadowRoot</span>) <var>root</var>);
 };
 
 callback <dfn callback>CustomElementConstructor</dfn> = <span>HTMLElement</span> ();
@@ -72816,7 +72817,11 @@ dictionary <dfn dictionary>ElementDefinitionOptions</dfn> {
 
    <dt><code data-x=""><var>registry</var>.<span subdfn data-x="dom-CustomElementRegistry-cloneSubtree">cloneSubtree</span>(<var>root</var>)</code></dt>
    <dd>Returns a copy of <var>root</var>, changing the registry from <var>root</var>'s inclusive
-   descendants from null (if any) to <var>registry</var> in the process.
+   descendants from null (if any) to <var>registry</var> in the process.</dd>
+
+   <dt><code data-x=""><var>registry</var>.<span subdfn data-x="dom-CustomElementRegistry-initializeSubtree">initializeSubtree</span>(<var>root</var>)</code></dt>
+   <dd>Each <span>inclusive descendant</span> of <var>root</var> with a null registry will have it
+   updated to this <code>CustomElementRegistry</code> object.</dd>
   </dl>
 
   <p w-nodev>The <dfn
@@ -73173,10 +73178,40 @@ console.assert(el instanceof SpiderMan);    // upgraded!</code></pre>
 
   <p>The <dfn method for="CustomElementRegistry"><code
   data-x="dom-CustomElementRegistry-cloneSubtree">cloneSubtree(<var>root</var>)</code></dfn>
-  method steps are to return the result of <span data-x="concept-node-clone">cloning a node</span>
-  given <var>root</var> with <span data-x="concept-node-clone-subtree"><i>subtree</i></span> set to
-  true and <span data-x="concept-node-clone-fallbackRegistry"><i>fallbackRegistry</i></span> set
-  <span>this</span>.</p>
+  method steps are:</p>
+
+  <ol>
+   <li><p>If <var>root</var> is a <code>Document</code> or <code>ShadowRoot</code> object, then
+   throw a <span>"<code>NotSupportedError</code>"</span> <code>DOMException</code>.</p></li>
+
+   <li><p>Return the result of <span data-x="concept-node-clone">cloning a node</span> given
+   <var>root</var> with <span data-x="concept-node-clone-subtree"><i>subtree</i></span> set to true
+   and <span data-x="concept-node-clone-fallbackRegistry"><i>fallbackRegistry</i></span> set
+   <span>this</span>.</p></li>
+  </ol>
+
+  <p>The <dfn method for="CustomElementRegistry"><code
+  data-x="dom-CustomElementRegistry-initializeSubtree">initializeSubtree(<var>root</var>)</code></dfn>
+  method steps are:</p>
+
+  <ol>
+   <li>
+    <p>For each <span>inclusive descendant</span> <var>inclusiveDescendant</var> of
+    <var>root</var>:</p>
+
+    <ol>
+     <li><p>If <var>inclusiveDescendant</var> is an <code>Element</code> node whose <span
+     data-x="element-custom-element-registry">custom element registry</span> is null, then set
+     <var>inclusiveDescendant</var>'s <span data-x="element-custom-element-registry">custom element
+     registry</span> to <span>this</span>.</p></li>
+
+     <li><p>Otherwise, if <var>inclusiveDescendant</var> is a <code>ShadowRoot</code> node whose
+     <span data-x="shadow-root-custom-element-registry">custom element registry</span> is null, set
+     <var>inclusiveDescendant</var>'s <span data-x="shadow-root-custom-element-registry">custom
+     element registry</span> to <span>this</span>.</p></li>
+    </ol>
+   </li>
+  </ol>
 
 
   <h4><dfn data-x="custom-element-upgrades">Upgrades</dfn></h4>
@@ -129333,7 +129368,8 @@ dictionary <dfn dictionary>StorageEventInit</dfn> : <span>EventInit</span> {
    <li><p>Let <var>is</var> be the value of the "<code data-x="attr-is">is</code>" attribute in the
    given token, if such an attribute exists, or null otherwise.</p></li>
 
-   <li class="XXX"><p>Obtain <var>registry</var> from the parser context.</p></li>
+   <li><p>Let <var>registry</var> be the result of <span data-x="look up a custom element
+   registry">looking up a custom element registry</span> given <var>intended parent</var>.</p></li>
 
    <li><p>Let <var>definition</var> be the result of <span data-x="look up a custom element
    definition">looking up a custom element definition</span> given <var>registry</var>, <var>given
@@ -134512,9 +134548,10 @@ console.assert(container.firstChild instanceof SuperP);
     transitions.</p>
    </li>
 
-   <li>
-    <p>Let <var>root</var> be a new <code>html</code> element with no attributes.</p>
-   </li>
+   <li><p>Let <var>root</var> be the result of <span>creating an element</span> given the
+   <code>Document</code> node created above, "<code data-x="">html</code>", the <span>HTML
+   namespace</span>, null, null, false, and <var>context</var>'s <span
+   data-x="element-custom-element-registry">custom element registry</span>.</p></li>
 
    <li>
     <p>Append the element <var>root</var> to the <code>Document</code> node created