Make CPDF_Object subclass constructors intern strings

core/fpdfapi/parser/cpdf_name.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/parser/cpdf_name.h"
 
 #include "core/fpdfapi/parser/fpdf_parser_decode.h"
 #include "third_party/base/ptr_util.h"
 
-CPDF_Name::CPDF_Name(const CFX_ByteString& str) : m_Name(str) {}
+CPDF_Name::CPDF_Name(CFX_WeakPtr<CFX_ByteStringPool> pPool,
+                     const CFX_ByteString& str)
+    : m_Name(str) {
+  if (pPool)
+    m_Name = pPool->Intern(m_Name);
+}
 
 CPDF_Name::~CPDF_Name() {}
 
 CPDF_Object::Type CPDF_Name::GetType() const {
   return NAME;
 }
 
 std::unique_ptr<CPDF_Object> CPDF_Name::Clone() const {
-  return pdfium::MakeUnique<CPDF_Name>(m_Name);
+  return pdfium::MakeUnique<CPDF_Name>(nullptr, m_Name);
 }
 
 CFX_ByteString CPDF_Name::GetString() const {
   return m_Name;
 }
 
 void CPDF_Name::SetString(const CFX_ByteString& str) {
   m_Name = str;
 }
 
 bool CPDF_Name::IsName() const {
   return true;
 }
 
 CPDF_Name* CPDF_Name::AsName() {
   return this;
 }
 
 const CPDF_Name* CPDF_Name::AsName() const {
   return this;
 }
 
 CFX_WideString CPDF_Name::GetUnicodeText() const {
   return PDF_DecodeText(m_Name);
 }