Revert "Update CPDF_IndirectObjectHolder APIs for unique objects."

core/fpdfapi/parser/cpdf_dictionary.cpp

Index: core/fpdfapi/parser/cpdf_dictionary.cpp
diff --git a/core/fpdfapi/parser/cpdf_dictionary.cpp b/core/fpdfapi/parser/cpdf_dictionary.cpp
index 0f03947ebdb45819cd4b30515d2b9f2a7a953446..435eee72487070495748855743b9449b769d4839 100644
--- a/core/fpdfapi/parser/cpdf_dictionary.cpp
+++ b/core/fpdfapi/parser/cpdf_dictionary.cpp
@@ -188,8 +188,8 @@ void CPDF_Dictionary::ConvertToIndirectObjectFor(
   if (it == m_Map.end() || it->second->IsReference())
     return;
 
-  CPDF_Object* pObj = pHolder->AddIndirectObject(std::move(it->second));
-  it->second = UniqueReference(new CPDF_Reference(pHolder, pObj->GetObjNum()));
+  uint32_t objnum = pHolder->AddIndirectObject(it->second.release());
+  it->second = UniqueReference(new CPDF_Reference(pHolder, objnum));
 }
 
 void CPDF_Dictionary::RemoveFor(const CFX_ByteString& key) {
@@ -229,12 +229,6 @@ void CPDF_Dictionary::SetReferenceFor(const CFX_ByteString& key,
   SetFor(key, new CPDF_Reference(pDoc, objnum));
 }
 
-void CPDF_Dictionary::SetReferenceFor(const CFX_ByteString& key,
-                                      CPDF_IndirectObjectHolder* pDoc,
-                                      const CPDF_Object* pObj) {
-  SetReferenceFor(key, pDoc, pObj->GetObjNum());
-}
-
 void CPDF_Dictionary::SetNumberFor(const CFX_ByteString& key, FX_FLOAT f) {
   SetFor(key, new CPDF_Number(f));
 }