Remove FX_BOOL from core

core/fxcodec/codec/ccodec_pngmodule.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_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
 #define CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_
 
 #include "core/fxcrt/fx_system.h"
 
 class CFX_DIBAttribute;
 struct FXPNG_Context;
 
 #define PNG_ERROR_SIZE 256
 
 class CCodec_PngModule {
  public:
   CCodec_PngModule() { FXSYS_memset(m_szLastError, 0, sizeof(m_szLastError)); }
 
   FXPNG_Context* Start(void* pModule);
   void Finish(FXPNG_Context* pContext);
-  FX_BOOL Input(FXPNG_Context* pContext,
-                const uint8_t* src_buf,
-                uint32_t src_size,
-                CFX_DIBAttribute* pAttribute);
+  bool Input(FXPNG_Context* pContext,
+             const uint8_t* src_buf,
+             uint32_t src_size,
+             CFX_DIBAttribute* pAttribute);
 
-  FX_BOOL (*ReadHeaderCallback)(void* pModule,
-                                int width,
-                                int height,
-                                int bpc,
-                                int pass,
-                                int* color_type,
-                                double* gamma);
-  FX_BOOL (*AskScanlineBufCallback)(void* pModule, int line, uint8_t*& src_buf);
+  bool (*ReadHeaderCallback)(void* pModule,
+                             int width,
+                             int height,
+                             int bpc,
+                             int pass,
+                             int* color_type,
+                             double* gamma);
+  bool (*AskScanlineBufCallback)(void* pModule, int line, uint8_t*& src_buf);
   void (*FillScanlineBufCompletedCallback)(void* pModule, int pass, int line);
 
  protected:
   FX_CHAR m_szLastError[PNG_ERROR_SIZE];
 };
 
 #endif  // CORE_FXCODEC_CODEC_CCODEC_PNGMODULE_H_