Remove useless CPDF_FontCharMap.

core/include/fpdfapi/fpdf_resource.h

Index: core/include/fpdfapi/fpdf_resource.h
diff --git a/core/include/fpdfapi/fpdf_resource.h b/core/include/fpdfapi/fpdf_resource.h
index bc71e7afbc36d1fe2a29340996f458d3397856f0..b8504337df1867ba60b6a345ac9a24c105a27147 100644
--- a/core/include/fpdfapi/fpdf_resource.h
+++ b/core/include/fpdfapi/fpdf_resource.h
@@ -181,12 +181,6 @@ class CPDF_Font {
 
   FX_DWORD CharCodeFromUnicode(FX_WCHAR Unicode) const;
 
-  CFX_CharMap* GetCharMap() { return m_pCharMap; }
-
-  CFX_ByteString EncodeString(const CFX_WideString& str) const;
-
-  CFX_WideString DecodeString(const CFX_ByteString& str) const;
-
   void GetFontBBox(FX_RECT& rect) const { rect = m_FontBBox; }
 
   int GetTypeAscent() const { return m_Ascent; }
@@ -238,8 +232,6 @@ class CPDF_Font {
 
   void CheckFontMetrics();
 
-  CFX_CharMap* m_pCharMap;
-
   CFX_ByteString m_BaseFont;
 
   CPDF_StreamAcc* m_pFontFile;