Use string pools in some dictionaries

core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h

Index: core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h
diff --git a/core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h b/core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h
index 57dafb05280253ba16b94561f213e634244a1a32..edcda66f83f8f87d8718c0b0fc2a00e11fab7c96 100644
--- a/core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h
+++ b/core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h
@@ -9,6 +9,7 @@
 
 #include <map>
 
+#include "core/fxcrt/include/cfx_string_pool_template.h"
 #include "core/fxcrt/include/fx_system.h"
 
 class CPDF_Object;
@@ -38,12 +39,15 @@ class CPDF_IndirectObjectHolder {
   iterator end() { return m_IndirectObjs.end(); }
   const_iterator end() const { return m_IndirectObjs.end(); }
 
+  CFX_ByteStringPool* GetByteStringPool() { return &m_Pool; }
+
  protected:
   virtual CPDF_Object* ParseIndirectObject(uint32_t objnum);
 
  private:
   uint32_t m_LastObjNum;
   std::map<uint32_t, CPDF_Object*> m_IndirectObjs;
+  CFX_ByteStringPool m_Pool;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CPDF_INDIRECT_OBJECT_HOLDER_H_