Pass objects instead of strings for undo/redo records.

xfa/fwl/lightwidget/cfwl_combobox.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 "xfa/fwl/lightwidget/cfwl_combobox.h"
 
 #include <utility>
 
@@ skipping 122 matching lines @@
     return FWL_Error::Indefinite;
   return static_cast<IFWL_ComboBox*>(m_pIface)->SetEditLimit(nLimit);
 }
 
 FWL_Error CFWL_ComboBox::EditDoClipboard(int32_t iCmd) {
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return static_cast<IFWL_ComboBox*>(m_pIface)->EditDoClipboard(iCmd);
 }
 
-FX_BOOL CFWL_ComboBox::EditRedo(const CFX_ByteStringC& bsRecord) {
+FX_BOOL CFWL_ComboBox::EditRedo(const IFDE_TxtEdtDoRecord* pRecord) {
   if (!m_pIface)
     return FALSE;
-  return static_cast<IFWL_ComboBox*>(m_pIface)->EditRedo(bsRecord);
+  return static_cast<IFWL_ComboBox*>(m_pIface)->EditRedo(pRecord);
 }
 
-FX_BOOL CFWL_ComboBox::EditUndo(const CFX_ByteStringC& bsRecord) {
+FX_BOOL CFWL_ComboBox::EditUndo(const IFDE_TxtEdtDoRecord* pRecord) {
   if (!m_pIface)
     return FALSE;
-  return static_cast<IFWL_ComboBox*>(m_pIface)->EditUndo(bsRecord);
+  return static_cast<IFWL_ComboBox*>(m_pIface)->EditUndo(pRecord);
 }
 
 FWL_Error CFWL_ComboBox::SetMaxListHeight(FX_FLOAT fMaxHeight) {
   m_comboBoxData.m_fMaxListHeight = fMaxHeight;
   return FWL_Error::Succeeded;
 }
 
 FWL_Error CFWL_ComboBox::SetItemData(int32_t iIndex, void* pData) {
   CFWL_ComboBoxItem* pItem = reinterpret_cast<CFWL_ComboBoxItem*>(
       m_comboBoxData.GetItem(m_pIface, iIndex));
@@ skipping 261 matching lines @@
     FWL_HLISTITEM hItem,
     uint32_t dwCheckState) {
   CFWL_ComboBoxItem* pItem = reinterpret_cast<CFWL_ComboBoxItem*>(hItem);
   pItem->m_dwCheckState = dwCheckState;
   return FWL_Error::Succeeded;
 }
 
 FX_FLOAT CFWL_ComboBox::CFWL_ComboBoxDP::GetListHeight(IFWL_Widget* pWidget) {
   return m_fMaxListHeight;
 }