diff -r 000000000000 -r 6474c204b198 dom/xslt/base/txStringUtils.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/xslt/base/txStringUtils.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,34 @@
+/* -*- 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/. */
+
+#ifndef txStringUtils_h__
+#define txStringUtils_h__
+
+#include "nsAString.h"
+#include "nsIAtom.h"
+#include "nsUnicharUtils.h"
+#include "nsContentUtils.h" // For ASCIIToLower().
+
+typedef nsCaseInsensitiveStringComparator txCaseInsensitiveStringComparator;
+
+/**
+ * Check equality between a string and an atom containing ASCII.
+ */
+inline bool
+TX_StringEqualsAtom(const nsASingleFragmentString& aString, nsIAtom* aAtom)
+{
+  return aAtom->Equals(aString);
+}
+
+inline already_AddRefed<nsIAtom>
+TX_ToLowerCaseAtom(nsIAtom* aAtom)
+{
+  nsAutoString str;
+  aAtom->ToString(str);
+  nsContentUtils::ASCIIToLower(str);
+  return do_GetAtom(str);
+}
+
+#endif // txStringUtils_h__