Use string pools in some dictionaries

core/fpdfapi/fpdf_page/fpdf_page_doc.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/fpdf_page/pageint.h"
 
 #include <algorithm>
 #include <set>
@@ skipping 166 matching lines @@
     if (pFont->GetFontDict()->KeyExist("Widths"))
       continue;
 
     CPDF_Type1Font* pT1Font = pFont->AsType1Font();
     if (pEncoding && !pT1Font->GetEncoding()->IsIdentical(pEncoding))
       continue;
 
     return fontData->AddRef();
   }
 
-  CPDF_Dictionary* pDict = new CPDF_Dictionary;
+  CPDF_Dictionary* pDict = new CPDF_Dictionary(m_pPDFDoc);
   pDict->SetNameFor("Type", "Font");
   pDict->SetNameFor("Subtype", "Type1");
   pDict->SetNameFor("BaseFont", fontName);
   if (pEncoding) {
-    pDict->SetFor("Encoding", pEncoding->Realize());
+    pDict->SetFor("Encoding", pEncoding->Realize(m_pPDFDoc));
   }
   m_pPDFDoc->AddIndirectObject(pDict);
   CPDF_Font* pFont = CPDF_Font::CreateFontF(m_pPDFDoc, pDict);
   if (!pFont) {
     return nullptr;
   }
   CPDF_CountedFont* fontData = new CPDF_CountedFont(pFont);
   m_FontMap[pDict] = fontData;
   return fontData->AddRef();
 }
@@ skipping 340 matching lines @@
 }
 
 CPDF_CountedPattern* CPDF_DocPageData::FindPatternPtr(
     CPDF_Object* pPatternObj) const {
   if (!pPatternObj)
     return nullptr;
 
   auto it = m_PatternMap.find(pPatternObj);
   return it != m_PatternMap.end() ? it->second : nullptr;
 }