diff -r 000000000000 -r 6474c204b198 parser/html/nsHtml5OplessBuilder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsHtml5OplessBuilder.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 sw=2 et tw=78: */
+/* 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 nsHtml5OplessBuilder_h
+#define nsHtml5OplessBuilder_h
+
+#include "nsHtml5DocumentBuilder.h"
+
+class nsParserBase;
+
+/**
+ * This class implements a minimal subclass of nsHtml5DocumentBuilder that
+ * works when tree operation queues that are part of the off-the-main-thread
+ * parsing machinery are not used and, therefore, nsHtml5TreeOpExecutor is
+ * not used.
+ *
+ * This class is mostly responsible for wrapping tree building in an update
+ * batch and resetting various fields in nsContentSink upon finishing.
+ */
+class nsHtml5OplessBuilder : public nsHtml5DocumentBuilder
+{
+public:
+  NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
+
+  nsHtml5OplessBuilder();
+  ~nsHtml5OplessBuilder();
+  void Start();
+  void Finish();
+  void SetParser(nsParserBase* aParser);
+};
+
+#endif // nsHtml5OplessBuilder_h