diff -r 000000000000 -r 6474c204b198 xpcom/io/Base64.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/io/Base64.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+/* -*- 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 mozilla_Base64_h__
+#define mozilla_Base64_h__
+
+#include "nsString.h"
+
+class nsIInputStream;
+
+namespace mozilla {
+
+nsresult
+Base64EncodeInputStream(nsIInputStream *aInputStream, 
+                        nsACString &aDest,
+                        uint32_t aCount,
+                        uint32_t aOffset = 0);
+nsresult
+Base64EncodeInputStream(nsIInputStream *aInputStream, 
+                        nsAString &aDest,
+                        uint32_t aCount,
+                        uint32_t aOffset = 0);
+
+nsresult
+Base64Encode(const nsACString &aString, nsACString &aBinary);
+nsresult
+Base64Encode(const nsAString &aString, nsAString &aBinaryData);
+
+nsresult
+Base64Decode(const nsACString &aBinaryData, nsACString &aString);
+nsresult
+Base64Decode(const nsAString &aBinaryData, nsAString &aString);
+
+} // namespace mozilla
+
+#endif