diff -r 000000000000 -r 6474c204b198 content/xul/templates/src/nsInstantiationNode.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/xul/templates/src/nsInstantiationNode.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 nsInstantiationNode_h__
+#define nsInstantiationNode_h__
+
+#include "mozilla/Attributes.h"
+#include "nsRuleNetwork.h"
+#include "nsRDFQuery.h"
+
+class nsXULTemplateQueryProcessorRDF;
+
+/**
+ * A leaf-level node in the rule network. If any instantiations
+ * propagate to this node, then we know we've matched a rule.
+ */
+class nsInstantiationNode : public ReteNode
+{
+public:
+    nsInstantiationNode(nsXULTemplateQueryProcessorRDF* aProcessor,
+                        nsRDFQuery* aRule);
+
+    ~nsInstantiationNode();
+
+    // "downward" propagations
+    virtual nsresult Propagate(InstantiationSet& aInstantiations,
+                               bool aIsUpdate, bool& aMatched) MOZ_OVERRIDE;
+
+protected:
+
+    nsXULTemplateQueryProcessorRDF* mProcessor;
+    nsRDFQuery* mQuery;
+};
+
+#endif // nsInstantiationNode_h__