Remove FX_BOOL from core

core/fxge/ifx_systemfontinfo.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_FXGE_IFX_SYSTEMFONTINFO_H_
 #define CORE_FXGE_IFX_SYSTEMFONTINFO_H_
 
 #include "core/fxge/cfx_fontmapper.h"
 #include "core/fxge/fx_font.h"
 
 const uint32_t kTableNAME = FXDWORD_GET_MSBFIRST("name");
 const uint32_t kTableTTCF = FXDWORD_GET_MSBFIRST("ttcf");
 
 class IFX_SystemFontInfo {
  public:
   static std::unique_ptr<IFX_SystemFontInfo> CreateDefault(
       const char** pUserPaths);
 
   virtual ~IFX_SystemFontInfo() {}
 
-  virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper) = 0;
+  virtual bool EnumFontList(CFX_FontMapper* pMapper) = 0;
   virtual void* MapFont(int weight,
-                        FX_BOOL bItalic,
+                        bool bItalic,
                         int charset,
                         int pitch_family,
                         const FX_CHAR* face,
                         int& iExact) = 0;
 
 #ifdef PDF_ENABLE_XFA
   virtual void* MapFontByUnicode(uint32_t dwUnicode,
                                  int weight,
-                                 FX_BOOL bItalic,
+                                 bool bItalic,
                                  int pitch_family);
 #endif  // PDF_ENABLE_XFA
 
   virtual void* GetFont(const FX_CHAR* face) = 0;
   virtual uint32_t GetFontData(void* hFont,
                                uint32_t table,
                                uint8_t* buffer,
                                uint32_t size) = 0;
-  virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) = 0;
-  virtual FX_BOOL GetFontCharset(void* hFont, int& charset) = 0;
+  virtual bool GetFaceName(void* hFont, CFX_ByteString& name) = 0;
+  virtual bool GetFontCharset(void* hFont, int& charset) = 0;
   virtual int GetFaceIndex(void* hFont);
   virtual void DeleteFont(void* hFont) = 0;
 };
 
 #endif  // CORE_FXGE_IFX_SYSTEMFONTINFO_H_