Make CPDF_Object containers hold objects via unique pointers

core/fpdfapi/parser/fpdf_parser_utility.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/parser/fpdf_parser_utility.h"
 
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
@@ skipping 175 matching lines @@
         }
       }
       buf << "]";
       break;
     }
     case CPDF_Object::DICTIONARY: {
       const CPDF_Dictionary* p = pObj->AsDictionary();
       buf << "<<";
       for (const auto& it : *p) {
         const CFX_ByteString& key = it.first;
-        CPDF_Object* pValue = it.second;
+        CPDF_Object* pValue = it.second.get();
         buf << "/" << PDF_NameEncode(key);
         if (pValue && !pValue->IsInline()) {
           buf << " " << pValue->GetObjNum() << " 0 R ";
         } else {
           buf << pValue;
         }
       }
       buf << ">>";
       break;
     }
     case CPDF_Object::STREAM: {
       const CPDF_Stream* p = pObj->AsStream();
       buf << p->GetDict() << "stream\r\n";
       CPDF_StreamAcc acc;
       acc.LoadAllData(p, TRUE);
       buf.AppendBlock(acc.GetData(), acc.GetSize());
       buf << "\r\nendstream";
       break;
     }
     default:
       ASSERT(FALSE);
       break;
   }
   return buf;
 }