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diff --git a/core/fpdfapi/render/cpdf_docrenderdata.h b/core/fpdfapi/render/cpdf_docrenderdata.h
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index 0000000000..a8f4167a8d
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+++ b/core/fpdfapi/render/cpdf_docrenderdata.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_RENDER_CPDF_DOCRENDERDATA_H_
+#define CORE_FPDFAPI_RENDER_CPDF_DOCRENDERDATA_H_
+
+#include <map>
+
+#include "core/fpdfapi/page/cpdf_countedobject.h"
+
+class CPDF_Document;
+class CPDF_Font;
+class CPDF_Object;
+class CPDF_TransferFunc;
+class CPDF_Type3Cache;
+class CPDF_Type3Font;
+
+class CPDF_DocRenderData {
+ public:
+  explicit CPDF_DocRenderData(CPDF_Document* pPDFDoc);
+  ~CPDF_DocRenderData();
+
+  CPDF_Type3Cache* GetCachedType3(CPDF_Type3Font* pFont);
+  void ReleaseCachedType3(CPDF_Type3Font* pFont);
+  CPDF_TransferFunc* GetTransferFunc(CPDF_Object* pObj);
+  void ReleaseTransferFunc(CPDF_Object* pObj);
+  void Clear(bool bRelease);
+
+ private:
+  using CPDF_Type3CacheMap =
+      std::map<CPDF_Font*, CPDF_CountedObject<CPDF_Type3Cache>*>;
+  using CPDF_TransferFuncMap =
+      std::map<CPDF_Object*, CPDF_CountedObject<CPDF_TransferFunc>*>;
+
+  CPDF_Document* m_pPDFDoc;  // Not Owned
+  CPDF_Type3CacheMap m_Type3FaceMap;
+  CPDF_TransferFuncMap m_TransferFuncMap;
+};
+
+#endif  // CORE_FPDFAPI_RENDER_CPDF_DOCRENDERDATA_H_