diff -r 000000000000 -r 6474c204b198 xpcom/string/public/nsTLiteralString.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/string/public/nsTLiteralString.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+
+  /**
+   * nsTLiteralString_CharT
+   *
+   * Stores a null-terminated, immutable sequence of characters.
+   *
+   * Subclass of nsTString that restricts string value to a literal
+   * character sequence.  This class does not own its data. The data is
+   * assumed to be permanent. In practice this is true because this code
+   * is only usable by and for libxul.
+   */
+class nsTLiteralString_CharT : public nsTString_CharT
+  {
+    public:
+
+      typedef nsTLiteralString_CharT    self_type;
+
+    public:
+
+        /**
+         * constructor
+         */
+
+      template<size_type N>
+      nsTLiteralString_CharT( const char_type (&str)[N] )
+        : string_type(const_cast<char_type*>(str), N - 1, F_TERMINATED | F_LITERAL)
+        {
+        }
+
+    private:
+
+        // NOT TO BE IMPLEMENTED
+      template<size_type N>
+      nsTLiteralString_CharT( char_type (&str)[N] ) MOZ_DELETE;
+  };