Make CPDF_Object subclass constructors intern strings

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 1671 matching lines @@
         break;
       }
     }
     if (match) {
       predefined = cs;
       break;
     }
   }
   if (predefined) {
     if (predefined == PDFFONT_ENCODING_WINANSI) {
-      return new CPDF_Name(pPool->Intern("WinAnsiEncoding"));
+      return new CPDF_Name(pPool, "WinAnsiEncoding");
     }
     if (predefined == PDFFONT_ENCODING_MACROMAN) {
-      return new CPDF_Name(pPool->Intern("MacRomanEncoding"));
+      return new CPDF_Name(pPool, "MacRomanEncoding");
     }
     if (predefined == PDFFONT_ENCODING_MACEXPERT) {
-      return new CPDF_Name(pPool->Intern("MacExpertEncoding"));
+      return new CPDF_Name(pPool, "MacExpertEncoding");
     }
     return nullptr;
   }
   const uint16_t* pStandard =
       PDF_UnicodesForPredefinedCharSet(PDFFONT_ENCODING_WINANSI);
   CPDF_Array* pDiff = new CPDF_Array;
   for (int i = 0; i < 256; i++) {
     if (pStandard[i] == m_Unicodes[i])
       continue;
 
@@ skipping 100 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;
 }