Unify some code

core/fpdfapi/parser/cpdf_hint_tables.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_PARSER_CPDF_HINT_TABLES_H_
 #define CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_
 
 #include <vector>
 
 #include "core/fpdfapi/parser/cpdf_data_avail.h"
 #include "core/fxcrt/fx_basic.h"
 #include "core/fxcrt/fx_stream.h"
 
 class CFX_BitStream;
-class CPDF_Dictionary;
+class CPDF_Linearized;
 class CPDF_Stream;
 
 class CPDF_HintTables {
  public:
-  CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Dictionary* pLinearized);
+  CPDF_HintTables(CPDF_DataAvail* pDataAvail, CPDF_Linearized* pLinearized);
   virtual ~CPDF_HintTables();
 
   bool GetPagePos(uint32_t index,
                   FX_FILESIZE* szPageStartPos,
                   FX_FILESIZE* szPageLength,
                   uint32_t* dwObjNum);
 
   CPDF_DataAvail::DocAvailStatus CheckPage(
       uint32_t index,
       CPDF_DataAvail::DownloadHints* pHints);
 
   bool LoadHintStream(CPDF_Stream* pHintStream);
 
  protected:
   bool ReadPageHintTable(CFX_BitStream* hStream);
   bool ReadSharedObjHintTable(CFX_BitStream* hStream, uint32_t offset);
 
  private:
   // Tests can override.
   virtual int GetEndOfFirstPageOffset() const;
   virtual int GetNumberOfPages() const;
   virtual int GetFirstPageObjectNumber() const;
   virtual int GetFirstPageNumber() const;
   virtual int ReadPrimaryHintStreamOffset() const;
   virtual int ReadPrimaryHintStreamLength() const;
 
-  // Helper for the ReadPrimaryHintStream methods above.
-  int ReadPrimaryHintStream(int index) const;
-
   uint32_t GetItemLength(uint32_t index,
                          const std::vector<FX_FILESIZE>& szArray);
 
   // Owner, outlives this object.
   CPDF_DataAvail* const m_pDataAvail;
 
   // Owned by |m_pDataAvail|.
-  CPDF_Dictionary* const m_pLinearizedDict;
+  CPDF_Linearized* const m_pLinearized;
 
   uint32_t m_nFirstPageSharedObjs;
   FX_FILESIZE m_szFirstPageObjOffset;
   std::vector<uint32_t> m_dwDeltaNObjsArray;
   std::vector<uint32_t> m_dwNSharedObjsArray;
   std::vector<uint32_t> m_dwSharedObjNumArray;
   std::vector<uint32_t> m_dwIdentifierArray;
   std::vector<FX_FILESIZE> m_szPageOffsetArray;
   std::vector<FX_FILESIZE> m_szSharedObjOffsetArray;
 };
 
 #endif  // CORE_FPDFAPI_PARSER_CPDF_HINT_TABLES_H_