1 files changed, 43 insertions, 0 deletions
diff --git a/dom/html/HTMLUnknownElement.h b/dom/html/HTMLUnknownElement.h
new file mode 100644
index 0000000000..3bed35a4f6
--- /dev/null
+++ b/dom/html/HTMLUnknownElement.h
@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 http://mozilla.org/MPL/2.0/. */
+#ifndef mozilla_dom_HTMLUnknownElement_h
+#define mozilla_dom_HTMLUnknownElement_h
+
+#include "mozilla/Attributes.h"
+#include "nsGenericHTMLElement.h"
+
+namespace mozilla::dom {
+
+#define NS_HTMLUNKNOWNELEMENT_IID                    \
+  {                                                  \
+    0xc09e665b, 0x3876, 0x40dd, {                    \
+      0x85, 0x28, 0x44, 0xc2, 0x3f, 0xd4, 0x58, 0xf2 \
+    }                                                \
+  }
+
+class HTMLUnknownElement final : public nsGenericHTMLElement {
+ public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_HTMLUNKNOWNELEMENT_IID)
+
+  NS_DECL_ISUPPORTS_INHERITED
+
+  explicit HTMLUnknownElement(
+      already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+      : nsGenericHTMLElement(std::move(aNodeInfo)) {}
+
+  virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
+
+ protected:
+  virtual ~HTMLUnknownElement() = default;
+  virtual JSObject* WrapNode(JSContext* aCx,
+                             JS::Handle<JSObject*> aGivenProto) override;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(HTMLUnknownElement, NS_HTMLUNKNOWNELEMENT_IID)
+
+}  // namespace mozilla::dom
+
+#endif /* mozilla_dom_HTMLUnknownElement_h */