Auto merge of #27088 - jdm:group, r=ferjm

Implement Console grouping APIs.

These are used by Hubs and other sites we want to run.

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #9274
- [x] These changes do not require tests because we can't test stdout content or devtools messages.

components/script/dom/webidls/Console.webidl

@@ -1,25 +1,27 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
-/*
- * References:
- *   MDN Docs - https://developer.mozilla.org/en-US/docs/Web/API/console
- *   Draft Spec - https://sideshowbarker.github.io/console-spec/
- *
- * © Copyright 2014 Mozilla Foundation.
- */
+
+// https://console.spec.whatwg.org/
 
 [ClassString="Console",
  Exposed=(Window,Worker,Worklet),
  ProtoObjectHack]
 namespace console {
-  // These should be DOMString message, DOMString message2, ...
+  // Logging
   void log(DOMString... messages);
   void debug(DOMString... messages);
   void info(DOMString... messages);
   void warn(DOMString... messages);
   void error(DOMString... messages);
   void assert(boolean condition, optional DOMString message);
+
+  // Grouping
+  void group(DOMString... data);
+  void groupCollapsed(DOMString... data);
+  void groupEnd();
+
+  // Timing
   void time(DOMString message);
   void timeEnd(DOMString message);
 };