Use FXFONT defines in place of integers.

core/fpdfdoc/cpvt_wordinfo.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_FPDFDOC_CPVT_WORDINFO_H_
 #define CORE_FPDFDOC_CPVT_WORDINFO_H_
 
 #include "core/fpdfdoc/include/cpvt_wordprops.h"
 #include "core/fxcrt/include/fx_system.h"
 
 struct CPVT_WordInfo {
   CPVT_WordInfo()
       : Word(0),
-        nCharset(0),
+        nCharset(FXFONT_ANSI_CHARSET),
         fWordX(0.0f),
         fWordY(0.0f),
         fWordTail(0.0f),
         nFontIndex(-1),
         pWordProps(nullptr) {}
 
   CPVT_WordInfo(uint16_t word,
                 int32_t charset,
                 int32_t fontIndex,
                 CPVT_WordProps* pProps)
       : Word(word),
         nCharset(charset),
         fWordX(0.0f),
         fWordY(0.0f),
         fWordTail(0.0f),
         nFontIndex(fontIndex),
         pWordProps(pProps) {}
 
   CPVT_WordInfo(const CPVT_WordInfo& word)
       : Word(0),
-        nCharset(0),
+        nCharset(FXFONT_ANSI_CHARSET),
         fWordX(0.0f),
         fWordY(0.0f),
         fWordTail(0.0f),
         nFontIndex(-1),
         pWordProps(nullptr) {
     operator=(word);
   }
 
   ~CPVT_WordInfo() { delete pWordProps; }
 
@@ skipping 15 matching lines @@
   uint16_t Word;
   int32_t nCharset;
   FX_FLOAT fWordX;
   FX_FLOAT fWordY;
   FX_FLOAT fWordTail;
   int32_t nFontIndex;
   CPVT_WordProps* pWordProps;
 };
 
 #endif  // CORE_FPDFDOC_CPVT_WORDINFO_H_