IFWL method and param cleanup

xfa/fwl/core/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/core/cfwl_combobox.h"
 
 #include <utility>
 
@@ skipping 109 matching lines @@
 
 int32_t CFWL_ComboBox::GetEditLimit() {
   return GetWidget() ? ToComboBox(GetWidget())->GetEditLimit() : 0;
 }
 
 FWL_Error CFWL_ComboBox::SetEditLimit(int32_t nLimit) {
   return GetWidget() ? ToComboBox(GetWidget())->SetEditLimit(nLimit)
                      : FWL_Error::Indefinite;
 }
 
-FWL_Error CFWL_ComboBox::EditDoClipboard(int32_t iCmd) {
-  return GetWidget() ? ToComboBox(GetWidget())->EditDoClipboard(iCmd)
-                     : FWL_Error::Indefinite;
-}
-
 bool CFWL_ComboBox::EditRedo(const IFDE_TxtEdtDoRecord* pRecord) {
   return GetWidget() ? ToComboBox(GetWidget())->EditRedo(pRecord) : false;
 }
 
 bool CFWL_ComboBox::EditUndo(const IFDE_TxtEdtDoRecord* pRecord) {
   return GetWidget() ? ToComboBox(GetWidget())->EditUndo(pRecord) : false;
 }
 
 FWL_Error CFWL_ComboBox::SetMaxListHeight(FX_FLOAT fMaxHeight) {
   m_fMaxListHeight = fMaxHeight;
@@ skipping 206 matching lines @@
 
 void CFWL_ComboBox::SetItemCheckState(IFWL_Widget* pWidget,
                                       CFWL_ListItem* pItem,
                                       uint32_t dwCheckState) {
   static_cast<CFWL_ListItem*>(pItem)->m_dwCheckState = dwCheckState;
 }
 
 FX_FLOAT CFWL_ComboBox::GetListHeight(IFWL_Widget* pWidget) {
   return m_fMaxListHeight;
 }