Get rid of IPDF_DataAvail.

core/fpdfapi/fpdf_parser/include/ipdf_data_avail.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_FPDFAPI_FPDF_PARSER_INCLUDE_IPDF_DATA_AVAIL_H_
-#define CORE_FPDFAPI_FPDF_PARSER_INCLUDE_IPDF_DATA_AVAIL_H_
-
-#include "core/fxcrt/include/fx_stream.h"
-#include "core/fxcrt/include/fx_system.h"
-
-class CPDF_Document;
-class CPDF_Object;
-
-class IPDF_DataAvail {
- public:
-  // Must match PDF_DATA_* definitions in public/fpdf_dataavail.h, but cannot
-  // #include that header. fpdfsdk/fpdf_dataavail.cpp has static_asserts
-  // to make sure the two sets of values match.
-  enum DocAvailStatus {
-    DataError = -1,        // PDF_DATA_ERROR
-    DataNotAvailable = 0,  // PDF_DATA_NOTAVAIL
-    DataAvailable = 1,     // PDF_DATA_AVAIL
-  };
-
-  // Must match PDF_*LINEAR* definitions in public/fpdf_dataavail.h, but cannot
-  // #include that header. fpdfsdk/fpdf_dataavail.cpp has static_asserts
-  // to make sure the two sets of values match.
-  enum DocLinearizationStatus {
-    LinearizationUnknown = -1,  // PDF_LINEARIZATION_UNKNOWN
-    NotLinearized = 0,          // PDF_NOT_LINEARIZED
-    Linearized = 1,             // PDF_LINEARIZED
-  };
-
-  // Must match PDF_FORM_* definitions in public/fpdf_dataavail.h, but cannot
-  // #include that header. fpdfsdk/fpdf_dataavail.cpp has static_asserts
-  // to make sure the two sets of values match.
-  enum DocFormStatus {
-    FormError = -1,        // PDF_FORM_ERROR
-    FormNotAvailable = 0,  // PDF_FORM_NOTAVAIL
-    FormAvailable = 1,     // PDF_FORM_AVAIL
-    FormNotExist = 2,      // PDF_FORM_NOTEXIST
-  };
-
-  class FileAvail {
-   public:
-    virtual ~FileAvail();
-    virtual FX_BOOL IsDataAvail(FX_FILESIZE offset, uint32_t size) = 0;
-  };
-
-  class DownloadHints {
-   public:
-    virtual ~DownloadHints();
-    virtual void AddSegment(FX_FILESIZE offset, uint32_t size) = 0;
-  };
-
-  static IPDF_DataAvail* Create(FileAvail* pFileAvail, IFX_FileRead* pFileRead);
-  virtual ~IPDF_DataAvail();
-
-  FileAvail* GetFileAvail() const { return m_pFileAvail; }
-  IFX_FileRead* GetFileRead() const { return m_pFileRead; }
-
-  virtual DocAvailStatus IsDocAvail(DownloadHints* pHints) = 0;
-  virtual void SetDocument(CPDF_Document* pDoc) = 0;
-  virtual DocAvailStatus IsPageAvail(int iPage, DownloadHints* pHints) = 0;
-  virtual FX_BOOL IsLinearized() = 0;
-  virtual DocFormStatus IsFormAvail(DownloadHints* pHints) = 0;
-  virtual DocLinearizationStatus IsLinearizedPDF() = 0;
-  virtual void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos,
-                                         uint32_t* pSize) = 0;
-
- protected:
-  IPDF_DataAvail(FileAvail* pFileAvail, IFX_FileRead* pFileRead);
-
-  FileAvail* m_pFileAvail;
-  IFX_FileRead* m_pFileRead;
-};
-
-#endif  // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_IPDF_DATA_AVAIL_H_