Add test for CPDF_StreamParser::ReadHexString.

core/src/fpdfapi/fpdf_page/pageint.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_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 #define CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
 
 #include "../../../../third_party/base/nonstd_unique_ptr.h"
+#include "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 
+class CPDF_AllStates;
+class CPDF_ParseOptions;
+
 #define PARSE_STEP_LIMIT 100
 
 class CPDF_StreamParser {
  public:
   CPDF_StreamParser(const uint8_t* pData, FX_DWORD dwSize);
   ~CPDF_StreamParser();
 
   CPDF_Stream* ReadInlineStream(CPDF_Document* pDoc,
                                 CPDF_Dictionary* pDict,
                                 CPDF_Object* pCSObj,
                                 FX_BOOL bDecode);
   typedef enum { EndOfData, Number, Keyword, Name, Others } SyntaxType;
 
   SyntaxType ParseNextElement();
   uint8_t* GetWordBuf() { return m_WordBuffer; }
   FX_DWORD GetWordSize() { return m_WordSize; }
   CPDF_Object* GetObject() {
     CPDF_Object* pObj = m_pLastObj;
     m_pLastObj = NULL;
     return pObj;
   }
   FX_DWORD GetPos() { return m_Pos; }
   void SetPos(FX_DWORD pos) { m_Pos = pos; }
 
   CPDF_Object* ReadNextObject(FX_BOOL bAllowNestedArray = FALSE,
                               FX_BOOL bInArray = FALSE);
   void SkipPathObject();
 
  protected:
+  friend class fpdf_page_parser_old_ReadHexString_Test;
+
   void GetNextWord(FX_BOOL& bIsNumber);
   CFX_ByteString ReadString();
   CFX_ByteString ReadHexString();
   const uint8_t* m_pBuf;
 
   // Length in bytes of m_pBuf.
   FX_DWORD m_Size;
 
   // Current byte position within m_pBuf.
   FX_DWORD m_Pos;
@@ skipping 459 matching lines @@
                  FX_FLOAT& G,
                  FX_FLOAT& B) const override;
   CPDF_ColorSpace* GetBaseCS() const override;
 
  private:
   CPDF_ColorSpace* m_pBaseCS;
   CPDF_CountedColorSpace* m_pCountedBaseCS;
 };
 
 #endif  // CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_