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diff --git a/fxjs/xfa/cjx_deltas.h b/fxjs/xfa/cjx_deltas.h
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index 0000000000..c94753f17b
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+++ b/fxjs/xfa/cjx_deltas.h
@@ -0,0 +1,20 @@
+// Copyright 2017 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef FXJS_XFA_CJX_DELTAS_H_
+#define FXJS_XFA_CJX_DELTAS_H_
+
+#include "fxjs/xfa/cjx_list.h"
+
+class CXFA_Deltas;
+
+class CJX_Deltas : public CJX_List {
+ public:
+  explicit CJX_Deltas(CXFA_Deltas* node);
+  ~CJX_Deltas() override;
+};
+
+#endif  // FXJS_XFA_CJX_DELTAS_H_