Remove FX_WORD in favor of uint16_t.

core/include/fpdfdoc/fpdf_ap.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 CORE_INCLUDE_FPDFDOC_FPDF_AP_H_
 #define CORE_INCLUDE_FPDFDOC_FPDF_AP_H_
 
 #include "core/include/fpdfdoc/fpdf_vt.h"
@@ skipping 35 matching lines @@
   FX_FLOAT fColor4;
 };
 
 class CPVT_Provider : public IPDF_VariableText_Provider {
  public:
   CPVT_Provider(IPVT_FontMap* pFontMap);
   ~CPVT_Provider() override;
 
   // IPDF_VariableText_Provider
   int32_t GetCharWidth(int32_t nFontIndex,
-                       FX_WORD word,
+                       uint16_t word,
                        int32_t nWordStyle) override;
   int32_t GetTypeAscent(int32_t nFontIndex) override;
   int32_t GetTypeDescent(int32_t nFontIndex) override;
-  int32_t GetWordFontIndex(FX_WORD word,
+  int32_t GetWordFontIndex(uint16_t word,
                            int32_t charset,
                            int32_t nFontIndex) override;
-  FX_BOOL IsLatinWord(FX_WORD word) override;
+  FX_BOOL IsLatinWord(uint16_t word) override;
   int32_t GetDefaultFontIndex() override;
 
  private:
   IPVT_FontMap* m_pFontMap;
 };
 
 class CPVT_GenerateAP {
  public:
   static FX_BOOL GenerateTextFieldAP(CPDF_Document* pDoc,
                                      CPDF_Dictionary* pAnnotDict);
 
   static FX_BOOL GenerateComboBoxAP(CPDF_Document* pDoc,
                                     CPDF_Dictionary* pAnnotDict);
 
   static FX_BOOL GenerateListBoxAP(CPDF_Document* pDoc,
                                    CPDF_Dictionary* pAnnotDict);
 
   static CFX_ByteString GenerateEditAP(IPVT_FontMap* pFontMap,
                                        IPDF_VariableText_Iterator* pIterator,
                                        const CFX_FloatPoint& ptOffset,
                                        FX_BOOL bContinuous,
-                                       FX_WORD SubWord = 0,
+                                       uint16_t SubWord = 0,
                                        const CPVT_WordRange* pVisible = NULL);
 
   static CFX_ByteString GenerateBorderAP(const CFX_FloatRect& rect,
                                          FX_FLOAT fWidth,
                                          const CPVT_Color& color,
                                          const CPVT_Color& crLeftTop,
                                          const CPVT_Color& crRightBottom,
                                          int32_t nStyle,
                                          const CPVT_Dash& dash);
 
   static CFX_ByteString GenerateColorAP(const CPVT_Color& color,
                                         const FX_BOOL& bFillOrStroke);
 };
 
 #endif  // CORE_INCLUDE_FPDFDOC_FPDF_AP_H_