Revert "Update CPDF_IndirectObjectHolder APIs for unique objects."

core/fpdfapi/edit/fpdf_edit_create.cpp

 // 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
 
 #include "core/fpdfapi/edit/editint.h"
 
 #include <vector>
 
@@ skipping 1226 matching lines @@
   FX_BOOL bExistInMap = !!m_pDocument->GetIndirectObject(objnum);
   const uint8_t object_type = m_pParser->GetObjectType(objnum);
   bool bObjStm = (object_type == 2) && m_pEncryptDict && !m_pXRefStream;
   if (m_pParser->IsVersionUpdated() || m_bSecurityChanged || bExistInMap ||
       bObjStm) {
     CPDF_Object* pObj = m_pDocument->GetOrParseIndirectObject(objnum);
     if (!pObj) {
       m_ObjectOffset[objnum] = 0;
       return 0;
     }
-    if (WriteIndirectObj(pObj))
+    if (WriteIndirectObj(pObj)) {
       return -1;
-    if (!bExistInMap)
-      m_pDocument->DeleteIndirectObject(objnum);
+    }
+    if (!bExistInMap) {
+      m_pDocument->ReleaseIndirectObject(objnum);
+    }
   } else {
     uint8_t* pBuffer;
     uint32_t size;
     m_pParser->GetIndirectBinary(objnum, pBuffer, size);
     if (!pBuffer) {
       return 0;
     }
     if (object_type == 2) {
       if (m_pXRefStream) {
         if (WriteIndirectObjectToStream(objnum, pBuffer, size) < 0) {
@@ skipping 750 matching lines @@
   m_pCryptoHandler = nullptr;
 }
 void CPDF_Creator::ResetStandardSecurity() {
   if (!m_bLocalCryptoHandler)
     return;
 
   delete m_pCryptoHandler;
   m_pCryptoHandler = nullptr;
   m_bLocalCryptoHandler = FALSE;
 }