Remove ICodec_* Interfaces.

core/fxcodec/codec/fx_codec_jpeg.cpp

 // 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
 
 #include <setjmp.h>
 
 #include "core/fxcodec/codec/codec_int.h"
 #include "core/fxcodec/include/fx_codec.h"
@@ skipping 458 matching lines @@
 
   int nlines = jpeg_read_scanlines(&cinfo, &m_pScanlineBuf, 1);
   if (nlines < 1) {
     return nullptr;
   }
   return m_pScanlineBuf;
 }
 uint32_t CCodec_JpegDecoder::GetSrcOffset() {
   return (uint32_t)(m_SrcSize - src.bytes_in_buffer);
 }
-ICodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
+CCodec_ScanlineDecoder* CCodec_JpegModule::CreateDecoder(
     const uint8_t* src_buf,
     uint32_t src_size,
     int width,
     int height,
     int nComps,
     FX_BOOL ColorTransform) {
   if (!src_buf || src_size == 0) {
     return NULL;
   }
   CCodec_JpegDecoder* pDecoder = new CCodec_JpegDecoder;
@@ skipping 160 matching lines @@
                                           uint8_t** avail_buf_ptr) {
   if (avail_buf_ptr) {
     *avail_buf_ptr = NULL;
     if (((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer > 0) {
       *avail_buf_ptr =
           (uint8_t*)((FXJPEG_Context*)pContext)->m_SrcMgr.next_input_byte;
     }
   }
   return (uint32_t)((FXJPEG_Context*)pContext)->m_SrcMgr.bytes_in_buffer;
 }