Remove IFX_SystemHandler.

fpdfsdk/formfiller/cba_fontmap.h

 // Copyright 2014 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 FPDFSDK_FORMFILLER_CBA_FONTMAP_H_
 #define FPDFSDK_FORMFILLER_CBA_FONTMAP_H_
 
 #include "fpdfsdk/pdfwindow/PWL_FontMap.h"
 
 class CPDF_Dictionary;
 class CPDFSDK_Annot;
 
 class CBA_FontMap : public CPWL_FontMap {
  public:
-  CBA_FontMap(CPDFSDK_Annot* pAnnot, IFX_SystemHandler* pSystemHandler);
+  CBA_FontMap(CPDFSDK_Annot* pAnnot, CFX_SystemHandler* pSystemHandler);
   ~CBA_FontMap() override;
 
   void SetDefaultFont(CPDF_Font* pFont, const CFX_ByteString& sFontName);
 
   void Reset();
   void SetAPType(const CFX_ByteString& sAPType);
 
  private:
   // CPWL_FontMap:
   void Initialize() override;
   CPDF_Document* GetDocument() override;
   CPDF_Font* FindFontSameCharset(CFX_ByteString& sFontAlias,
                                  int32_t nCharset) override;
   void AddedFont(CPDF_Font* pFont, const CFX_ByteString& sFontAlias) override;
 
   CPDF_Font* FindResFontSameCharset(CPDF_Dictionary* pResDict,
                                     CFX_ByteString& sFontAlias,
                                     int32_t nCharset);
   CPDF_Font* GetAnnotDefaultFont(CFX_ByteString& csNameTag);
   void AddFontToAnnotDict(CPDF_Font* pFont, const CFX_ByteString& sAlias);
 
   CPDF_Document* m_pDocument;
   CPDF_Dictionary* m_pAnnotDict;
   CPDF_Font* m_pDefaultFont;
   CFX_ByteString m_sDefaultFontName;
   CFX_ByteString m_sAPType;
 };
 
 #endif  // FPDFSDK_FORMFILLER_CBA_FONTMAP_H_