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diff --git a/core/fpdfapi/font/cpdf_cidfont.h b/core/fpdfapi/font/cpdf_cidfont.h
new file mode 100644
index 0000000000..0a6b3e7871
--- /dev/null
+++ b/core/fpdfapi/font/cpdf_cidfont.h
@@ -0,0 +1,91 @@
+// 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_FONT_CPDF_CIDFONT_H_
+#define CORE_FPDFAPI_FONT_CPDF_CIDFONT_H_
+
+#include <memory>
+
+#include "core/fpdfapi/font/cpdf_font.h"
+#include "core/fxcrt/fx_string.h"
+#include "core/fxcrt/fx_system.h"
+
+enum CIDSet {
+  CIDSET_UNKNOWN,
+  CIDSET_GB1,
+  CIDSET_CNS1,
+  CIDSET_JAPAN1,
+  CIDSET_KOREA1,
+  CIDSET_UNICODE,
+  CIDSET_NUM_SETS
+};
+
+class CFX_CTTGSUBTable;
+class CPDF_Array;
+class CPDF_CID2UnicodeMap;
+class CPDF_CMap;
+class CPDF_StreamAcc;
+
+class CPDF_CIDFont : public CPDF_Font {
+ public:
+  CPDF_CIDFont();
+  ~CPDF_CIDFont() override;
+
+  static FX_FLOAT CIDTransformToFloat(uint8_t ch);
+
+  // CPDF_Font:
+  bool IsCIDFont() const override;
+  const CPDF_CIDFont* AsCIDFont() const override;
+  CPDF_CIDFont* AsCIDFont() override;
+  int GlyphFromCharCode(uint32_t charcode, bool* pVertGlyph) override;
+  int GetCharWidthF(uint32_t charcode) override;
+  FX_RECT GetCharBBox(uint32_t charcode) override;
+  uint32_t GetNextChar(const FX_CHAR* pString,
+                       int nStrLen,
+                       int& offset) const override;
+  int CountChar(const FX_CHAR* pString, int size) const override;
+  int AppendChar(FX_CHAR* str, uint32_t charcode) const override;
+  int GetCharSize(uint32_t charcode) const override;
+  bool IsVertWriting() const override;
+  bool IsUnicodeCompatible() const override;
+  bool Load() override;
+  CFX_WideString UnicodeFromCharCode(uint32_t charcode) const override;
+  uint32_t CharCodeFromUnicode(FX_WCHAR Unicode) const override;
+
+  uint16_t CIDFromCharCode(uint32_t charcode) const;
+  const uint8_t* GetCIDTransform(uint16_t CID) const;
+  short GetVertWidth(uint16_t CID) const;
+  void GetVertOrigin(uint16_t CID, short& vx, short& vy) const;
+
+ protected:
+  void LoadGB2312();
+  int GetGlyphIndex(uint32_t unicodeb, bool* pVertGlyph);
+  int GetVerticalGlyph(int index, bool* pVertGlyph);
+  void LoadMetricsArray(CPDF_Array* pArray,
+                        CFX_ArrayTemplate<uint32_t>& result,
+                        int nElements);
+  void LoadSubstFont();
+  FX_WCHAR GetUnicodeFromCharCode(uint32_t charcode) const;
+
+  CPDF_CMap* m_pCMap;
+  std::unique_ptr<CPDF_CMap> m_pAllocatedCMap;
+  CPDF_CID2UnicodeMap* m_pCID2UnicodeMap;
+  CIDSet m_Charset;
+  bool m_bType1;
+  bool m_bCIDIsGID;
+  uint16_t m_DefaultWidth;
+  std::unique_ptr<CPDF_StreamAcc> m_pStreamAcc;
+  bool m_bAnsiWidthsFixed;
+  FX_RECT m_CharBBox[256];
+  CFX_ArrayTemplate<uint32_t> m_WidthList;
+  short m_DefaultVY;
+  short m_DefaultW1;
+  CFX_ArrayTemplate<uint32_t> m_VertMetrics;
+  bool m_bAdobeCourierStd;
+  std::unique_ptr<CFX_CTTGSUBTable> m_pTTGSUBTable;
+};
+
+#endif  // CORE_FPDFAPI_FONT_CPDF_CIDFONT_H_