Remove FX_DWORD from core/ and delete definition

core/fpdfapi/fpdf_font/cpdf_type3font.h

 // 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_FPDF_FONT_CPDF_TYPE3FONT_H_
 #define CORE_FPDFAPI_FPDF_FONT_CPDF_TYPE3FONT_H_
 
 #include <map>
 
 #include "core/fpdfapi/fpdf_font/cpdf_simplefont.h"
 #include "core/fxcrt/include/fx_coordinates.h"
 #include "core/fxcrt/include/fx_system.h"
 
 class CPDF_Dictionary;
 class CPDF_Type3Char;
 
 class CPDF_Type3Font : public CPDF_SimpleFont {
  public:
   CPDF_Type3Font();
   ~CPDF_Type3Font() override;
 
   // CPDF_Font:
   bool IsType3Font() const override;
   const CPDF_Type3Font* AsType3Font() const override;
   CPDF_Type3Font* AsType3Font() override;
-  int GetCharWidthF(FX_DWORD charcode, int level = 0) override;
-  FX_RECT GetCharBBox(FX_DWORD charcode, int level = 0) override;
+  int GetCharWidthF(uint32_t charcode, int level = 0) override;
+  FX_RECT GetCharBBox(uint32_t charcode, int level = 0) override;
 
   void SetPageResources(CPDF_Dictionary* pResources) {
     m_pPageResources = pResources;
   }
-  CPDF_Type3Char* LoadChar(FX_DWORD charcode, int level = 0);
+  CPDF_Type3Char* LoadChar(uint32_t charcode, int level = 0);
   void CheckType3FontMetrics();
 
   CFX_Matrix& GetFontMatrix() { return m_FontMatrix; }
 
  protected:
   CFX_Matrix m_FontMatrix;
 
  private:
   // CPDF_Font:
   FX_BOOL Load() override;
 
   // CPDF_SimpleFont:
   void LoadGlyphMap() override {}
 
   int m_CharWidthL[256];
   CPDF_Dictionary* m_pCharProcs;
   CPDF_Dictionary* m_pPageResources;
   CPDF_Dictionary* m_pFontResources;
-  std::map<FX_DWORD, CPDF_Type3Char*> m_CacheMap;
+  std::map<uint32_t, CPDF_Type3Char*> m_CacheMap;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_FONT_CPDF_TYPE3FONT_H_