diff -r 000000000000 -r 6474c204b198 parser/html/nsHtml5MetaScannerHSupplement.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsHtml5MetaScannerHSupplement.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+/* 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/. */
+ 
+private:
+  nsCString mCharset;
+  inline int32_t read()
+  {
+    return readable->read();
+  }
+public:
+  void sniff(nsHtml5ByteReadable* bytes, nsACString& charset);