Reduce usage of operator LPCWSTR from CFX_WideString().

fpdfsdk/src/pdfwindow/PWL_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 "../../include/pdfwindow/PDFWindow.h"
 #include "../../include/pdfwindow/PWL_Wnd.h"
 #include "../../include/pdfwindow/PWL_EditCtrl.h"
 #include "../../include/pdfwindow/PWL_Edit.h"
@@ skipping 248 matching lines @@
 FX_INT32 CPWL_ComboBox::GetSelect() const
 {
         return m_nSelectItem;
 }
 
 void CPWL_ComboBox::SetSelect(FX_INT32 nItemIndex)
 {
         if (m_pList)
                 m_pList->Select(nItemIndex);
 
-        m_pEdit->SetText(m_pList->GetText());
+        m_pEdit->SetText(m_pList->GetText().c_str());
 
         m_nSelectItem = nItemIndex;
 }
 
 void CPWL_ComboBox::SetEditSel(FX_INT32 nStartChar,FX_INT32 nEndChar)
 {
         if (m_pEdit)
         {
                 m_pEdit->SetSel(nStartChar,nEndChar);
         }
@@ skipping 351 matching lines @@
 
 FX_BOOL CPWL_ComboBox::IsPopup() const
 {
         return m_bPopup;
 }
 
 void CPWL_ComboBox::SetSelectText()
 {
         CFX_WideString swText = m_pList->GetText();
         m_pEdit->SelectAll();
-        m_pEdit->ReplaceSel(m_pList->GetText());
+        m_pEdit->ReplaceSel(m_pList->GetText().c_str());
         m_pEdit->SelectAll();
 
         m_nSelectItem = m_pList->GetCurSel();
 }
 
 FX_BOOL CPWL_ComboBox::IsModified() const
 {
         return m_pEdit->IsModified();
 }
 
 void CPWL_ComboBox::SetFillerNotify(IPWL_Filler_Notify* pNotify)
 {
          m_pFillerNotify = pNotify;
 
          if (m_pEdit)
                  m_pEdit->SetFillerNotify(pNotify);
 
          if (m_pList)
                  m_pList->SetFillerNotify(pNotify);
 }