diff -r 000000000000 -r 6474c204b198 intl/uconv/src/nsTextToSubURI.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/intl/uconv/src/nsTextToSubURI.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+/* -*- Mode: C; tab-width: 4; 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 nsTextToSubURI_h__
+#define nsTextToSubURI_h__
+
+#include "nsITextToSubURI.h"
+
+//==============================================================
+class nsTextToSubURI: public nsITextToSubURI {
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSITEXTTOSUBURI
+
+public:
+  nsTextToSubURI();
+  virtual ~nsTextToSubURI();
+
+private:
+  // IRI is "Internationalized Resource Identifiers"
+  // http://www.ietf.org/internet-drafts/draft-duerst-iri-01.txt
+  // 
+  // if the IRI option is true then we assume that the URI is encoded as UTF-8
+  // note: there is no definite way to distinguish between IRI and a URI encoded 
+  // with a non-UTF-8 charset
+  // Use this option carefully -- it may cause dataloss
+  // (recommended to set to true for UI purpose only)
+  //
+  nsresult convertURItoUnicode(const nsAFlatCString &aCharset,
+                               const nsAFlatCString &aURI, 
+                               bool aIRI, 
+                               nsAString &_retval);
+};
+
+#endif // nsTextToSubURI_h__
+