Remove FX_BOOL from core

core/fpdfdoc/cpdf_defaultappearance.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_CPDF_DEFAULTAPPEARANCE_H_
 #define CORE_FPDFDOC_CPDF_DEFAULTAPPEARANCE_H_
 
 #include "core/fpdfdoc/cpdf_defaultappearance.h"
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/fx_string.h"
 #include "core/fxcrt/fx_system.h"
 #include "core/fxge/fx_dib.h"
 
 enum class BorderStyle { SOLID, DASH, BEVELED, INSET, UNDERLINE };
 enum class PaintOperation { STROKE, FILL };
 
 class CPDF_DefaultAppearance {
  public:
   CPDF_DefaultAppearance() {}
   explicit CPDF_DefaultAppearance(const CFX_ByteString& csDA) : m_csDA(csDA) {}
 
   CPDF_DefaultAppearance(const CPDF_DefaultAppearance& cDA) {
     m_csDA = cDA.GetStr();
   }
 
   CFX_ByteString GetStr() const { return m_csDA; }
 
-  FX_BOOL HasFont();
+  bool HasFont();
   CFX_ByteString GetFontString();
   void GetFont(CFX_ByteString& csFontNameTag, FX_FLOAT& fFontSize);
 
-  FX_BOOL HasColor(PaintOperation nOperation = PaintOperation::FILL);
+  bool HasColor(PaintOperation nOperation = PaintOperation::FILL);
   CFX_ByteString GetColorString(
       PaintOperation nOperation = PaintOperation::FILL);
   void GetColor(int& iColorType,
                 FX_FLOAT fc[4],
                 PaintOperation nOperation = PaintOperation::FILL);
   void GetColor(FX_ARGB& color,
                 int& iColorType,
                 PaintOperation nOperation = PaintOperation::FILL);
 
-  FX_BOOL HasTextMatrix();
+  bool HasTextMatrix();
   CFX_ByteString GetTextMatrixString();
   CFX_Matrix GetTextMatrix();
 
  private:
   CFX_ByteString m_csDA;
 };
 
 #endif  // CORE_FPDFDOC_CPDF_DEFAULTAPPEARANCE_H_