Fix stack overflow from nested arrays.

core/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_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 #define CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_
 
 #include <map>
@@ skipping 35 matching lines @@
   SyntaxType ParseNextElement();
   uint8_t* GetWordBuf() { return m_WordBuffer; }
   uint32_t GetWordSize() const { return m_WordSize; }
   CPDF_Object* GetObject() {
     CPDF_Object* pObj = m_pLastObj;
     m_pLastObj = NULL;
     return pObj;
   }
   uint32_t GetPos() const { return m_Pos; }
   void SetPos(uint32_t pos) { m_Pos = pos; }
-  CPDF_Object* ReadNextObject(FX_BOOL bAllowNestedArray = FALSE,
-                              FX_BOOL bInArray = FALSE);
+  CPDF_Object* ReadNextObject(bool bAllowNestedArray, uint32_t dwInArrayLevel);
 
  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.
@@ skipping 24 matching lines @@
     } m_Number;
     CPDF_Object* m_pObject;
     struct {
       int m_Len;
       char m_Buffer[32];
     } m_Name;
   };
 };
 #define _FPDF_MAX_FORM_LEVEL_ 30
 #define _FPDF_MAX_TYPE3_FORM_LEVEL_ 4
-#define _FPDF_MAX_OBJECT_STACK_SIZE_ 512
 class CPDF_StreamContentParser {
  public:
   CPDF_StreamContentParser(CPDF_Document* pDoc,
                            CPDF_Dictionary* pPageResources,
                            CPDF_Dictionary* pParentResources,
                            const CFX_Matrix* pmtContentToUser,
                            CPDF_PageObjectHolder* pObjectHolder,
                            CPDF_Dictionary* pResources,
                            CFX_FloatRect* pBBox,
                            CPDF_AllStates* pAllStates,
@@ skipping 413 matching lines @@
 };
 
 CFX_ByteStringC PDF_FindKeyAbbreviationForTesting(const CFX_ByteStringC& abbr);
 CFX_ByteStringC PDF_FindValueAbbreviationForTesting(
     const CFX_ByteStringC& abbr);
 
 void PDF_ReplaceAbbr(CPDF_Object* pObj);
 bool IsPathOperator(const uint8_t* buf, size_t len);
 
 #endif  // CORE_FPDFAPI_FPDF_PAGE_PAGEINT_H_