XFA: bring fx_codec_fax in-line with master

core/include/fxcodec/fx_codec.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_FXCODEC_FX_CODEC_H_
 #define CORE_INCLUDE_FXCODEC_FX_CODEC_H_
 
 #include <map>
@@ skipping 505 matching lines @@
   CFX_ByteString m_strAuthor;
   uint8_t m_strTime[20];
   int32_t m_nGifLeft;
   int32_t m_nGifTop;
   FX_DWORD* m_pGifLocalPalette;
   FX_DWORD m_nGifLocalPalNum;
   int32_t m_nBmpCompressType;
   std::map<FX_DWORD, void*> m_Exif;
 };
 
-FX_BOOL FaxSkipEOL(const uint8_t* src_buf, int bitsize, int& bitpos);
-FX_BOOL FaxGet1DLine(const uint8_t* src_buf,
-                     int bitsize,
-                     int& bitpos,
-                     uint8_t* dest_buf,
-                     int columns);
-FX_BOOL FaxG4GetRow(const uint8_t* src_buf,
-                    int bitsize,
-                    int& bitpos,
-                    uint8_t* dest_buf,
-                    const uint8_t* ref_buf,
-                    int columns);
 void FaxG4Decode(const uint8_t* src_buf,
                  FX_DWORD src_size,
                  int* pbitpos,
                  uint8_t* dest_buf,
                  int width,
                  int height,
                  int pitch);
 
 #endif  // CORE_INCLUDE_FXCODEC_FX_CODEC_H_