Fix infinite recursion in CPDF_DocPageData::GetColorSpace().

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>
 #include <memory>
 #include <unordered_map>
+#include <set>
 #include <vector>
 
 #include "core/fpdfapi/fpdf_page/cpdf_contentmark.h"
 #include "core/fpdfapi/fpdf_page/cpdf_countedobject.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
 #include "core/fxge/include/fx_ge.h"
 
 class CPDF_AllStates;
 class CPDF_ColorSpace;
 class CPDF_ExpIntFunc;
@@ skipping 326 matching lines @@
   using CPDF_CountedImage = CPDF_CountedObject<CPDF_Image>;
   using CPDF_CountedStreamAcc = CPDF_CountedObject<CPDF_StreamAcc>;
 
   using CPDF_ColorSpaceMap = std::map<CPDF_Object*, CPDF_CountedColorSpace*>;
   using CPDF_FontFileMap = std::map<CPDF_Stream*, CPDF_CountedStreamAcc*>;
   using CPDF_FontMap = std::map<CPDF_Dictionary*, CPDF_CountedFont*>;
   using CPDF_IccProfileMap = std::map<CPDF_Stream*, CPDF_CountedIccProfile*>;
   using CPDF_ImageMap = std::map<uint32_t, CPDF_CountedImage*>;
   using CPDF_PatternMap = std::map<CPDF_Object*, CPDF_CountedPattern*>;
 
+  CPDF_ColorSpace* GetColorSpaceImpl(CPDF_Object* pCSObj,
+                                     const CPDF_Dictionary* pResources,
+                                     std::set<CPDF_Object*>* pVisited);
+
   CPDF_Document* const m_pPDFDoc;
   FX_BOOL m_bForceClear;
   std::map<CFX_ByteString, CPDF_Stream*> m_HashProfileMap;
   CPDF_ColorSpaceMap m_ColorSpaceMap;
   CPDF_FontFileMap m_FontFileMap;
   CPDF_FontMap m_FontMap;
   CPDF_IccProfileMap m_IccProfileMap;
   CPDF_ImageMap m_ImageMap;
   CPDF_PatternMap m_PatternMap;
 };
@@ skipping 179 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_