Make CPDF_Array take unique_ptrs

fpdfsdk/fpdfppo.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 "public/fpdf_ppo.h"
 
 #include <map>
 #include <memory>
@@ skipping 203 matching lines @@
     if (!CopyInheritable(pCurPageDict, pSrcPageDict, "MediaBox")) {
       // Search for "CropBox" in the source page dictionary,
       // if it does not exists, use the default letter size.
       CPDF_Object* pInheritable =
           PageDictGetInheritableTag(pSrcPageDict, "CropBox");
       if (pInheritable) {
         pCurPageDict->SetFor("MediaBox", pInheritable->Clone().release());
       } else {
         // Make the default size to be letter size (8.5'x11')
         CPDF_Array* pArray = new CPDF_Array;
-        pArray->AddNumber(0);
-        pArray->AddNumber(0);
-        pArray->AddNumber(612);
-        pArray->AddNumber(792);
+        pArray->AddNew<CPDF_Number>(0);
+        pArray->AddNew<CPDF_Number>(0);
+        pArray->AddNew<CPDF_Number>(612);
+        pArray->AddNew<CPDF_Number>(792);
         pCurPageDict->SetFor("MediaBox", pArray);
       }
     }
 
     // 2 Resources - required
     if (!CopyInheritable(pCurPageDict, pSrcPageDict, "Resources"))
       return false;
 
     // 3 CropBox - optional
     CopyInheritable(pCurPageDict, pSrcPageDict, "CropBox");
@@ skipping 145 matching lines @@
     return false;
 
   CPDF_Dictionary* pDstDict = pDstDoc->GetRoot();
   if (!pDstDict)
     return false;
 
   pDstDict->SetFor("ViewerPreferences",
                    pSrcDict->CloneDirectObject().release());
   return true;
 }