Remove external jpeg provider interface.

core/include/fxcodec/fx_codec_provider.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_PROVIDER_H_
-#define CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_
-
-#include "../fxcrt/fx_system.h"
-
-class IFX_JpegProvider {
- public:
-  virtual void Release() = 0;
-
-  virtual void* CreateDecoder(const uint8_t* src_buf,
-                              FX_DWORD src_size,
-                              int width,
-                              int height,
-                              int nComps,
-                              FX_BOOL ColorTransform) = 0;
-
-  virtual void DestroyDecoder(void* pDecoder) = 0;
-
-  virtual void DownScale(void* pDecoder, int dest_width, int dest_height) = 0;
-
-  virtual FX_BOOL Rewind(void* pDecoder) = 0;
-
-  virtual uint8_t* GetNextLine(void* pDecoder) = 0;
-
-  virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0;
-
-  virtual FX_BOOL LoadInfo(const uint8_t* src_buf,
-                           FX_DWORD src_size,
-                           int& width,
-                           int& height,
-                           int& num_components,
-                           int& bits_per_components,
-                           FX_BOOL& color_transform,
-                           uint8_t** icc_buf_ptr = NULL,
-                           FX_DWORD* icc_length = NULL) = 0;
-
-  virtual FX_BOOL Encode(const class CFX_DIBSource* pSource,
-                         uint8_t*& dest_buf,
-                         FX_STRSIZE& dest_size,
-                         int quality = 75,
-                         const uint8_t* icc_buf = NULL,
-                         FX_DWORD icc_length = 0) = 0;
-
-  virtual void* Start() = 0;
-
-  virtual void Finish(void* pContext) = 0;
-
-  virtual void Input(void* pContext,
-                     const uint8_t* src_buf,
-                     FX_DWORD src_size) = 0;
-
-  virtual int ReadHeader(void* pContext,
-                         int* width,
-                         int* height,
-                         int* nComps) = 0;
-
-  virtual int StartScanline(void* pContext, int down_scale) = 0;
-
-  virtual FX_BOOL ReadScanline(void* pContext, uint8_t* dest_buf) = 0;
-
-  virtual FX_DWORD GetAvailInput(void* pContext,
-                                 uint8_t** avail_buf_ptr = NULL) = 0;
-
- protected:
-  ~IFX_JpegProvider() {}
-};
-
-#endif  // CORE_INCLUDE_FXCODEC_FX_CODEC_PROVIDER_H_