diff -r 000000000000 -r 6474c204b198 xpcom/string/public/nsLiteralString.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/string/public/nsLiteralString.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* -*- 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 nsLiteralString_h___
+#define nsLiteralString_h___
+
+#include "nscore.h"
+#include "nsString.h"
+
+  // declare nsLiteralString
+#include "string-template-def-unichar.h"
+#include "nsTLiteralString.h"
+#include "string-template-undef.h"
+
+  // declare nsLiteralCString
+#include "string-template-def-char.h"
+#include "nsTLiteralString.h"
+#include "string-template-undef.h"
+
+#include "mozilla/Char16.h"
+
+#define NS_MULTILINE_LITERAL_STRING(s)            static_cast<const nsLiteralString&>(nsLiteralString(s))
+#define NS_MULTILINE_LITERAL_STRING_INIT(n,s)     n(s)
+#define NS_NAMED_MULTILINE_LITERAL_STRING(n,s)    const nsLiteralString n(s)
+
+#define NS_LITERAL_STRING(s)                      static_cast<const nsLiteralString&>(nsLiteralString(MOZ_UTF16(s)))
+#define NS_LITERAL_STRING_INIT(n,s)               n(MOZ_UTF16(s))
+#define NS_NAMED_LITERAL_STRING(n,s)              const nsLiteralString n(MOZ_UTF16(s))
+
+#define NS_LITERAL_CSTRING(s)                     static_cast<const nsLiteralCString&>(nsLiteralCString(s))
+#define NS_LITERAL_CSTRING_INIT(n,s)              n(s)
+#define NS_NAMED_LITERAL_CSTRING(n,s)             const nsLiteralCString n(s)
+
+#endif /* !defined(nsLiteralString_h___) */