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diff --git a/core/fpdfapi/page/cpdf_docpagedata.h b/core/fpdfapi/page/cpdf_docpagedata.h
new file mode 100644
index 0000000000..64c0444a5e
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+++ b/core/fpdfapi/page/cpdf_docpagedata.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_PAGE_CPDF_DOCPAGEDATA_H_
+#define CORE_FPDFAPI_PAGE_CPDF_DOCPAGEDATA_H_
+
+#include <map>
+#include <set>
+
+#include "core/fpdfapi/page/cpdf_countedobject.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxcrt/fx_string.h"
+
+class CPDF_Dictionary;
+class CPDF_Document;
+class CPDF_Font;
+class CPDF_FontEncoding;
+class CPDF_IccProfile;
+class CPDF_Image;
+class CPDF_Object;
+class CPDF_Stream;
+class CPDF_StreamAcc;
+
+class CPDF_DocPageData {
+ public:
+  explicit CPDF_DocPageData(CPDF_Document* pPDFDoc);
+  ~CPDF_DocPageData();
+
+  void Clear(bool bRelease = FALSE);
+  CPDF_Font* GetFont(CPDF_Dictionary* pFontDict);
+  CPDF_Font* GetStandardFont(const CFX_ByteString& fontName,
+                             CPDF_FontEncoding* pEncoding);
+  void ReleaseFont(const CPDF_Dictionary* pFontDict);
+  CPDF_ColorSpace* GetColorSpace(CPDF_Object* pCSObj,
+                                 const CPDF_Dictionary* pResources);
+  CPDF_ColorSpace* GetCopiedColorSpace(CPDF_Object* pCSObj);
+  void ReleaseColorSpace(const CPDF_Object* pColorSpace);
+  CPDF_Pattern* GetPattern(CPDF_Object* pPatternObj,
+                           bool bShading,
+                           const CFX_Matrix& matrix);
+  void ReleasePattern(const CPDF_Object* pPatternObj);
+  CPDF_Image* GetImage(CPDF_Object* pImageStream);
+  void ReleaseImage(const CPDF_Object* pImageStream);
+  CPDF_IccProfile* GetIccProfile(CPDF_Stream* pIccProfileStream);
+  void ReleaseIccProfile(const CPDF_IccProfile* pIccProfile);
+  CPDF_StreamAcc* GetFontFileStreamAcc(CPDF_Stream* pFontStream);
+  void ReleaseFontFileStreamAcc(const CPDF_Stream* pFontStream);
+  bool IsForceClear() const { return m_bForceClear; }
+  CPDF_CountedColorSpace* FindColorSpacePtr(CPDF_Object* pCSObj) const;
+  CPDF_CountedPattern* FindPatternPtr(CPDF_Object* pPatternObj) const;
+
+ private:
+  using CPDF_CountedFont = CPDF_CountedObject<CPDF_Font>;
+  using CPDF_CountedIccProfile = CPDF_CountedObject<CPDF_IccProfile>;
+  using CPDF_CountedImage = CPDF_CountedObject<CPDF_Image>;
+  using CPDF_CountedStreamAcc = CPDF_CountedObject<CPDF_StreamAcc>;
+
+  using CPDF_ColorSpaceMap =
+      std::map<const CPDF_Object*, CPDF_CountedColorSpace*>;
+  using CPDF_FontFileMap = std::map<const CPDF_Stream*, CPDF_CountedStreamAcc*>;
+  using CPDF_FontMap = std::map<const CPDF_Dictionary*, CPDF_CountedFont*>;
+  using CPDF_IccProfileMap =
+      std::map<const CPDF_Stream*, CPDF_CountedIccProfile*>;
+  using CPDF_ImageMap = std::map<uint32_t, CPDF_CountedImage*>;
+  using CPDF_PatternMap = std::map<const CPDF_Object*, CPDF_CountedPattern*>;
+
+  CPDF_ColorSpace* GetColorSpaceImpl(CPDF_Object* pCSObj,
+                                     const CPDF_Dictionary* pResources,
+                                     std::set<CPDF_Object*>* pVisited);
+
+  CPDF_Document* const m_pPDFDoc;
+  bool m_bForceClear;
+  std::map<CFX_ByteString, CPDF_Stream*> m_HashProfileMap;
+  CPDF_ColorSpaceMap m_ColorSpaceMap;
+  CPDF_FontFileMap m_FontFileMap;
+  CPDF_FontMap m_FontMap;
+  CPDF_IccProfileMap m_IccProfileMap;
+  CPDF_ImageMap m_ImageMap;
+  CPDF_PatternMap m_PatternMap;
+};
+
+#endif  // CORE_FPDFAPI_PAGE_CPDF_DOCPAGEDATA_H_