Expose NavigationPrecommitController.addHandler

This allows adding a regular navigation handler during a precommit.

Fixes #11956.

Author: noamr

source

@@ -101124,6 +101124,7 @@ callback <dfn callback>NavigationInterceptHandler</dfn> = <span data-x="idl-Prom
   <pre><code class="idl">[Exposed=Window]
   interface <dfn interface>NavigationPrecommitController</dfn> {
     undefined <span data-x="dom-NavigationPrecommitController-redirect">redirect</span>(USVString url, optional <span>NavigationNavigateOptions</span> options = {});
+    undefined <span data-x="dom-NavigationPrecommitController-addHandler">addHandler</span>(<span>NavigationInterceptHandler</span> handler);
   };
 
   callback <dfn callback>NavigationPrecommitHandler</dfn> = <span data-x="idl-Promise">Promise</span>&lt;undefined> (<span>NavigationPrecommitController</span> controller);</code></pre>
@@ -101152,7 +101153,13 @@ callback <dfn callback>NavigationInterceptHandler</dfn> = <span data-x="idl-Prom
     <p>If the current <code>Document</code> <span data-x="can have its URL rewritten">cannot have
     its URL rewritten</span> to <var>url</var>, a <span>"<code>SecurityError</code>"</span>
     <code>DOMException</code> will be thrown.</p>
-  </dd>
+   </dd>
+
+   <dt><code data-x=""><var>precommitController</var>.<span subdfn data-x="dom-NavigationPrecommitController-addHandler">addHandler</span>(<span>NavigationInterceptHandler</span> <var>handler</var>)</code></dt>
+   <dd><p>Adds a <span>NavigationInterceptHandler</span> callback that would be called once the navigation is committed,
+   as if this method was passed to the <code
+   data-x="dom-NavigateEvent-intercept">navigateEvent.intercept()</code> method as a <code
+   data-x="dom-NavigationInterceptOptions-handler">handler</code>.</p></dd>
   </dl>
 
   <div w-nodev>
@@ -101246,6 +101253,33 @@ callback <dfn callback>NavigationInterceptHandler</dfn> = <span data-x="idl-Prom
   </ol>
   </div>
 
+  <div algorithm>
+  <p>The <dfn method for="NavigationPrecommitController"><code
+  data-x="dom-NavigationPrecommitController-addHandler">addHandler(<var>handler</var>,)</code></dfn>
+  method steps are:</p>
+
+  <ol>
+   <li><p><span>Assert</span>: <span>this</span>'s <span
+   data-x="concept-NavigationPrecommitController-event">event</span>'s <span
+   data-x="concept-NavigateEvent-interception-state">interception state</span> is not "<code
+   data-x="">none</code>".</p></li>
+
+   <li><p><span data-x="NavigateEvent-perform-shared-checks">Perform shared checks</span> given
+   <span>this</span>'s <span
+   data-x="concept-NavigationPrecommitController-event">event</span>.</p></li>
+
+   <li><p>If <span>this</span>'s <span
+   data-x="concept-NavigationPrecommitController-event">event</span>'s <span
+   data-x="concept-NavigateEvent-interception-state">interception state</span> is not "<code
+   data-x="">intercepted</code>", then throw an <span>"<code>InvalidStateError</code>"</span>
+   <code>DOMException</code>.</p></li>
+
+   <li><p><span data-x="list append">Append</span> <var>handler</var> to <span>this</span>'s <span
+   data-x="concept-NavigationPrecommitController-event">event</span>'s <span
+   data-x="concept-NavigateEvent-navigation-handler-list">navigation handler list</span>.</p></li>
+  </ol>
+  </div>
+
 
   </div>