Cleanup some PWL interfaces.

fpdfsdk/formfiller/cffl_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 "fpdfsdk/formfiller/cffl_combobox.h"
 
 #include "fpdfsdk/formfiller/cba_fontmap.h"
 #include "fpdfsdk/formfiller/cffl_formfiller.h"
@@ skipping 249 matching lines @@
     pEdit->SetCharSet(FXFONT_GB2312_CHARSET);
     pEdit->SetCodePage(936);
 
     pEdit->SetReadyToInput();
     CFX_WideString wsText = pEdit->GetText();
     int nCharacters = wsText.GetLength();
     CFX_ByteString bsUTFText = wsText.UTF16LE_Encode();
     unsigned short* pBuffer = (unsigned short*)bsUTFText.c_str();
     m_pApp->FFI_OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer,
                                      nCharacters, TRUE);
-
-    pEdit->SetEditNotify(this);
   }
 }
 
-void CFFL_ComboBox::OnKillFocus(CPWL_Wnd* pWnd) {
-  ASSERT(m_pApp);
-}
-
-void CFFL_ComboBox::OnAddUndo(CPWL_Edit* pEdit) {
-  ASSERT(pEdit);
-}
-
 CFX_WideString CFFL_ComboBox::GetSelectExportText() {
   CFX_WideString swRet;
 
   int nExport = -1;
   CPDFSDK_PageView* pPageView = GetCurPageView();
   if (CPWL_ComboBox* pComboBox =
           (CPWL_ComboBox*)GetPDFWindow(pPageView, FALSE)) {
     nExport = pComboBox->GetSelect();
   }
 
   if (nExport >= 0) {
     if (CPDF_FormField* pFormField = m_pWidget->GetFormField()) {
       swRet = pFormField->GetOptionValue(nExport);
       if (swRet.IsEmpty())
         swRet = pFormField->GetOptionLabel(nExport);
     }
   }
 
   return swRet;
 }