Make CPDF_Dictionary use unique pointers.

core/fpdfapi/font/cpdf_fontencoding.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 "core/fpdfapi/font/cpdf_fontencoding.h"
 
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
@@ skipping 1683 matching lines @@
     if (predefined == PDFFONT_ENCODING_MACROMAN) {
       return new CPDF_Name(pPool, "MacRomanEncoding");
     }
     if (predefined == PDFFONT_ENCODING_MACEXPERT) {
       return new CPDF_Name(pPool, "MacExpertEncoding");
     }
     return nullptr;
   }
   const uint16_t* pStandard =
       PDF_UnicodesForPredefinedCharSet(PDFFONT_ENCODING_WINANSI);
-  CPDF_Array* pDiff = new CPDF_Array;
+  auto pDiff = pdfium::MakeUnique<CPDF_Array>();
   for (int i = 0; i < 256; i++) {
     if (pStandard[i] == m_Unicodes[i])
       continue;
 
     pDiff->AddNew<CPDF_Number>(i);
     pDiff->AddNew<CPDF_Name>(PDF_AdobeNameFromUnicode(m_Unicodes[i]));
   }
 
   CPDF_Dictionary* pDict = new CPDF_Dictionary(pPool);
-  pDict->SetNameFor("BaseEncoding", "WinAnsiEncoding");
-  pDict->SetFor("Differences", pDiff);
+  pDict->SetNewFor<CPDF_Name>("BaseEncoding", "WinAnsiEncoding");
+  pDict->SetFor("Differences", std::move(pDiff));
   return pDict;
 }
 
 uint32_t FT_CharCodeFromUnicode(int encoding, FX_WCHAR unicode) {
   switch (encoding) {
     case FXFT_ENCODING_UNICODE:
       return unicode;
     case FXFT_ENCODING_ADOBE_STANDARD:
       return PDF_FindCode(StandardEncoding, unicode);
     case FXFT_ENCODING_ADOBE_EXPERT:
@@ skipping 83 matching lines @@
       return MacExpertEncoding[(uint8_t)charcode];
     case FXFT_ENCODING_ADOBE_LATIN_1:
       return AdobeWinAnsiEncoding[(uint8_t)charcode];
     case FXFT_ENCODING_APPLE_ROMAN:
       return MacRomanEncoding[(uint8_t)charcode];
     case PDFFONT_ENCODING_PDFDOC:
       return PDFDocEncoding[(uint8_t)charcode];
   }
   return 0;
 }