Add method to convert an indirect object in a dictionary

core/fpdfapi/parser/cpdf_dictionary.h

Index: core/fpdfapi/parser/cpdf_dictionary.h
diff --git a/core/fpdfapi/parser/cpdf_dictionary.h b/core/fpdfapi/parser/cpdf_dictionary.h
index 23f2e0e3caff4e49febb4af8cd50a70ce0b1fb6b..b56e40a6efe72f807f756ba9296a6fcce1101290 100644
--- a/core/fpdfapi/parser/cpdf_dictionary.h
+++ b/core/fpdfapi/parser/cpdf_dictionary.h
@@ -70,6 +70,9 @@ class CPDF_Dictionary : public CPDF_Object {
   void SetMatrixFor(const CFX_ByteString& key, const CFX_Matrix& matrix);
   void SetBooleanFor(const CFX_ByteString& key, bool bValue);
 
+  void ConvertToIndirectObjectFor(const CFX_ByteString& key,
+                                  CPDF_IndirectObjectHolder* pHolder);
+
   // Invalidates iterators for the element with the key |key|.
   void RemoveFor(const CFX_ByteString& key);