diff -r 000000000000 -r 6474c204b198 xpcom/io/nsScriptableBase64Encoder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/io/nsScriptableBase64Encoder.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- 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 nsScriptableBase64Encoder_h__
+#define nsScriptableBase64Encoder_h__
+
+#include "nsIScriptableBase64Encoder.h"
+#include "mozilla/Attributes.h"
+
+#define NS_SCRIPTABLEBASE64ENCODER_CID                 \
+  {0xaaf68860, 0xf849, 0x40ee,                         \
+   {0xbb, 0x7a, 0xb2, 0x29, 0xbc, 0xe0, 0x36, 0xa3} }
+#define NS_SCRIPTABLEBASE64ENCODER_CONTRACTID \
+  "@mozilla.org/scriptablebase64encoder;1"
+
+class nsScriptableBase64Encoder MOZ_FINAL : public nsIScriptableBase64Encoder
+{
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSISCRIPTABLEBASE64ENCODER
+private:
+  ~nsScriptableBase64Encoder() {}
+};
+
+#endif