diff -r 000000000000 -r 6474c204b198 layout/style/nsCSSAnonBoxes.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/style/nsCSSAnonBoxes.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,32 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/* atom list for CSS anonymous boxes */
+
+#ifndef nsCSSAnonBoxes_h___
+#define nsCSSAnonBoxes_h___
+
+#include "nsIAtom.h"
+
+// Empty class derived from nsIAtom so that function signatures can
+// require an atom from this atom list.
+class nsICSSAnonBoxPseudo : public nsIAtom {};
+
+class nsCSSAnonBoxes {
+public:
+
+  static void AddRefAtoms();
+
+  static bool IsAnonBox(nsIAtom *aAtom);
+#ifdef MOZ_XUL
+  static bool IsTreePseudoElement(nsIAtom* aPseudo);
+#endif
+
+#define CSS_ANON_BOX(_name, _value) static nsICSSAnonBoxPseudo* _name;
+#include "nsCSSAnonBoxList.h"
+#undef CSS_ANON_BOX
+};
+
+#endif /* nsCSSAnonBoxes_h___ */