Stop converting widestring -> c_str -> widestring in several places.

fpdfsdk/fxedit/fxet_list.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 "fpdfsdk/fxedit/include/fxet_list.h"
 
 #include "core/fpdfdoc/include/cpvt_word.h"
 #include "fpdfsdk/fxedit/include/fxet_edit.h"
@@ skipping 31 matching lines @@
 }
 
 FX_BOOL CFX_ListItem::IsSelected() const {
   return m_bSelected;
 }
 
 void CFX_ListItem::SetSelect(FX_BOOL bSelected) {
   m_bSelected = bSelected;
 }
 
-void CFX_ListItem::SetText(const FX_WCHAR* text) {
+void CFX_ListItem::SetText(const CFX_WideString& text) {
   m_pEdit->SetText(text);
 }
 
 void CFX_ListItem::SetFontSize(FX_FLOAT fFontSize) {
   m_pEdit->SetFontSize(fFontSize);
 }
 
 FX_FLOAT CFX_ListItem::GetItemHeight() const {
   return m_pEdit->GetContentRect().Height();
 }
@@ skipping 326 matching lines @@
 }
 
 int32_t CFX_ListCtrl::GetCaret() const {
   return m_nCaretIndex;
 }
 
 int32_t CFX_ListCtrl::GetSelect() const {
   return m_nSelItem;
 }
 
-void CFX_ListCtrl::AddString(const FX_WCHAR* str) {
+void CFX_ListCtrl::AddString(const CFX_WideString& str) {
   AddItem(str);
   ReArrange(GetCount() - 1);
 }
 
 void CFX_ListCtrl::SetMultipleSelect(int32_t nItemIndex, FX_BOOL bSelected) {
   if (!IsValid(nItemIndex))
     return;
 
   if (bSelected != IsItemSelected(nItemIndex)) {
     if (bSelected) {
@@ skipping 260 matching lines @@
 }
 
 void CFX_ListCtrl::SetFontMap(IPVT_FontMap* pFontMap) {
   m_pFontMap = pFontMap;
 }
 
 void CFX_ListCtrl::SetFontSize(FX_FLOAT fFontSize) {
   m_fFontSize = fFontSize;
 }
 
-void CFX_ListCtrl::AddItem(const FX_WCHAR* str) {
+void CFX_ListCtrl::AddItem(const CFX_WideString& str) {
   CFX_ListItem* pListItem = new CFX_ListItem();
   pListItem->SetFontMap(m_pFontMap);
   pListItem->SetFontSize(m_fFontSize);
   pListItem->SetText(str);
   m_aListItems.Add(pListItem);
 }
 
 CFX_Edit* CFX_ListCtrl::GetItemEdit(int32_t nIndex) const {
   if (CFX_ListItem* pListItem = m_aListItems.GetAt(nIndex)) {
     return pListItem->GetEdit();
@@ skipping 89 matching lines @@
   return nItemIndex >= 0 && nItemIndex < m_aListItems.GetSize();
 }
 
 CFX_WideString CFX_ListCtrl::GetItemText(int32_t nIndex) const {
   if (CFX_ListItem* pListItem = m_aListItems.GetAt(nIndex)) {
     return pListItem->GetText();
   }
 
   return L"";
 }