Remove FX_DWORD from core/ and delete definition

core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp

 // 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
 
 #include "core/fpdfapi/fpdf_font/cpdf_truetypefont.h"
 
 #include "core/fpdfapi/fpdf_font/font_int.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
@@ skipping 94 matching lines @@
               FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
           if (m_GlyphIndex[charcode]) {
             break;
           }
         }
       } else if (m_Encoding.m_Unicodes[charcode]) {
         if (bMSUnicode) {
           m_GlyphIndex[charcode] = FXFT_Get_Char_Index(
               m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]);
         } else if (bMacRoman) {
-          FX_DWORD maccode = FT_CharCodeFromUnicode(
+          uint32_t maccode = FT_CharCodeFromUnicode(
               FXFT_ENCODING_APPLE_ROMAN, m_Encoding.m_Unicodes[charcode]);
           if (!maccode) {
             m_GlyphIndex[charcode] =
                 FXFT_Get_Name_Index(m_Font.GetFace(), (char*)name);
           } else {
             m_GlyphIndex[charcode] =
                 FXFT_Get_Char_Index(m_Font.GetFace(), maccode);
           }
         }
       }
@@ skipping 90 matching lines @@
       }
     }
     if (bGotOne) {
       return;
     }
   }
   for (int charcode = 0; charcode < 256; charcode++) {
     m_GlyphIndex[charcode] = charcode;
   }
 }