Clean up fx_codec_fax.cpp.

core/fxcodec/codec/ccodec_faxmodule.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_FAXMODULE_H_
 #define CORE_FXCODEC_CODEC_CCODEC_FAXMODULE_H_
 
 #include "core/fxcrt/include/fx_system.h"
 
 class CCodec_ScanlineDecoder;
 
 class CCodec_FaxModule {
  public:
   CCodec_ScanlineDecoder* CreateDecoder(const uint8_t* src_buf,
                                         uint32_t src_size,
                                         int width,
                                         int height,
                                         int K,
-                                        FX_BOOL EndOfLine,
-                                        FX_BOOL EncodedByteAlign,
-                                        FX_BOOL BlackIs1,
+                                        bool EndOfLine,
+                                        bool EncodedByteAlign,
+                                        bool BlackIs1,
                                         int Columns,
                                         int Rows);
-  FX_BOOL Encode(const uint8_t* src_buf,
-                 int width,
-                 int height,
-                 int pitch,
-                 uint8_t*& dest_buf,
-                 uint32_t& dest_size);
 };
 
 #endif  // CORE_FXCODEC_CODEC_CCODEC_FAXMODULE_H_