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diff --git a/core/fpdfapi/parser/cpdf_reference.h b/core/fpdfapi/parser/cpdf_reference.h
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+++ b/core/fpdfapi/parser/cpdf_reference.h
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+// Copyright 2016 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 CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_
+#define CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_
+
+#include <set>
+
+#include "core/fpdfapi/parser/cpdf_object.h"
+
+class CPDF_IndirectObjectHolder;
+
+class CPDF_Reference : public CPDF_Object {
+ public:
+  CPDF_Reference(CPDF_IndirectObjectHolder* pDoc, int objnum);
+
+  // CPDF_Object.
+  Type GetType() const override;
+  CPDF_Object* Clone() const override;
+  CPDF_Object* GetDirect() const override;
+  CFX_ByteString GetString() const override;
+  FX_FLOAT GetNumber() const override;
+  int GetInteger() const override;
+  CPDF_Dictionary* GetDict() const override;
+  bool IsReference() const override;
+  CPDF_Reference* AsReference() override;
+  const CPDF_Reference* AsReference() const override;
+
+  CPDF_IndirectObjectHolder* GetObjList() const { return m_pObjList; }
+  uint32_t GetRefObjNum() const { return m_RefObjNum; }
+
+  void SetRef(CPDF_IndirectObjectHolder* pDoc, uint32_t objnum);
+
+ protected:
+  ~CPDF_Reference() override;
+
+  CPDF_Object* CloneNonCyclic(
+      bool bDirect,
+      std::set<const CPDF_Object*>* pVisited) const override;
+
+  CPDF_Object* SafeGetDirect() const;
+
+  CPDF_IndirectObjectHolder* m_pObjList;
+  uint32_t m_RefObjNum;
+};
+
+#endif  // CORE_FPDFAPI_PARSER_CPDF_REFERENCE_H_