Use string pools in some dictionaries

core/fpdfdoc/cpdf_filespec.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/fpdfdoc/include/cpdf_filespec.h"
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_object.h"
@@ skipping 92 matching lines @@
     }
   } else if (m_pObj->IsString()) {
     *csFileName = CFX_WideString::FromLocal(m_pObj->GetString().AsStringC());
   } else {
     return false;
   }
   *csFileName = DecodeFileName(csFileName->AsStringC());
   return true;
 }
 
-CPDF_FileSpec::CPDF_FileSpec() {
-  m_pObj = new CPDF_Dictionary;
+CPDF_FileSpec::CPDF_FileSpec(const CFX_WeakPtr<CFX_ByteStringPool>& pPool) {
+  m_pObj = new CPDF_Dictionary(pPool);
   m_pObj->AsDictionary()->SetNameFor("Type", "Filespec");
 }
 
 CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideStringC& filepath) {
   if (filepath.GetLength() <= 1)
     return CFX_WideString();
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
   if (filepath.GetAt(1) == ':') {
     CFX_WideString result;
@@ skipping 33 matching lines @@
     return;
 
   CFX_WideString wsStr = EncodeFileName(wsFileName);
   if (m_pObj->IsString()) {
     m_pObj->SetString(CFX_ByteString::FromUnicode(wsStr));
   } else if (CPDF_Dictionary* pDict = m_pObj->AsDictionary()) {
     pDict->SetStringFor("F", CFX_ByteString::FromUnicode(wsStr));
     pDict->SetStringFor("UF", PDF_EncodeText(wsStr));
   }
 }