Make AddIndirectObject() take a unique_ptr.

core/fpdfdoc/cpdf_interform.cpp

 // Copyright 2016 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 <vector>
 
 #include "core/fpdfapi/font/cpdf_font.h"
 #include "core/fpdfapi/font/cpdf_fontencoding.h"
@@ skipping 41 matching lines @@
 void AddFont(CPDF_Dictionary*& pFormDict,
              CPDF_Document* pDocument,
              const CPDF_Font* pFont,
              CFX_ByteString& csNameTag);
 
 void InitDict(CPDF_Dictionary*& pFormDict, CPDF_Document* pDocument) {
   if (!pDocument)
     return;
 
   if (!pFormDict) {
-    pFormDict = new CPDF_Dictionary(pDocument->GetByteStringPool());
-    pDocument->GetRoot()->SetReferenceFor(
-        "AcroForm", pDocument, pDocument->AddIndirectObject(pFormDict));
+    pFormDict =
+        pDocument->NewIndirect<CPDF_Dictionary>(pDocument->GetByteStringPool());
+    pDocument->GetRoot()->SetReferenceFor("AcroForm", pDocument,
+                                          pFormDict->GetObjNum());
   }
 
   CFX_ByteString csDA;
   if (!pFormDict->KeyExist("DR")) {
     CFX_ByteString csBaseName;
     CFX_ByteString csDefault;
     uint8_t charSet = CPDF_InterForm::GetNativeCharSet();
     CPDF_Font* pFont = CPDF_InterForm::AddStandardFont(pDocument, "Helvetica");
     if (pFont) {
       AddFont(pFormDict, pDocument, pFont, csBaseName);
@@ skipping 1239 matching lines @@
     else if (iType == FIELDTYPE_LISTBOX)
       m_pFormNotify->AfterSelectionChange(pField);
     else if (iType == FIELDTYPE_COMBOBOX || iType == FIELDTYPE_TEXTFIELD)
       m_pFormNotify->AfterValueChange(pField);
   }
 }
 
 void CPDF_InterForm::SetFormNotify(IPDF_FormNotify* pNotify) {
   m_pFormNotify = pNotify;
 }