Use string pools in some dictionaries

core/fpdfapi/fpdf_parser/include/cfdf_document.h

Index: core/fpdfapi/fpdf_parser/include/cfdf_document.h
diff --git a/core/fpdfapi/fpdf_parser/include/cfdf_document.h b/core/fpdfapi/fpdf_parser/include/cfdf_document.h
index 834aecd1ba7f234c20f6d27fc26a75067badd2a5..f3f49e76d49698c4e1e3cb6da0917a7e71e46944 100644
--- a/core/fpdfapi/fpdf_parser/include/cfdf_document.h
+++ b/core/fpdfapi/fpdf_parser/include/cfdf_document.h
@@ -9,6 +9,7 @@
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_object.h"
+#include "core/fxcrt/include/cfx_string_pool_template.h"
 #include "core/fxcrt/include/fx_basic.h"
 
 class CPDF_Dictionary;
@@ -23,6 +24,7 @@ class CFDF_Document : public CPDF_IndirectObjectHolder {
 
   FX_BOOL WriteBuf(CFX_ByteTextBuf& buf) const;
   CPDF_Dictionary* GetRoot() const { return m_pRootDict; }
+  CFX_ByteStringPool* GetByteStringPool() { return &m_ByteStringPool; }
 
  protected:
   CFDF_Document();
@@ -31,6 +33,7 @@ class CFDF_Document : public CPDF_IndirectObjectHolder {
   CPDF_Dictionary* m_pRootDict;
   IFX_FileRead* m_pFile;
   FX_BOOL m_bOwnFile;
+  CFX_ByteStringPool m_ByteStringPool;
 };
 
 #endif  // CORE_FPDFAPI_FPDF_PARSER_INCLUDE_CFDF_DOCUMENT_H_