Continue nit cleanup in fwl/core

xfa/fwl/core/cfwl_edit.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_edit.h"
 
 #include <memory>
 #include <vector>
 
 #include "third_party/base/ptr_util.h"
 
 namespace {
 
 IFWL_Edit* ToEdit(IFWL_Widget* widget) {
   return static_cast<IFWL_Edit*>(widget);
 }
 
-const IFWL_Edit* ToEdit(const IFWL_Widget* widget) {
-  return static_cast<const IFWL_Edit*>(widget);
-}
-
 }  // namespace
 
 CFWL_Edit::CFWL_Edit(const IFWL_App* app) : CFWL_Widget(app) {}
 
 CFWL_Edit::~CFWL_Edit() {}
 
 void CFWL_Edit::Initialize() {
   ASSERT(!m_pIface);
 
   m_pIface = pdfium::MakeUnique<IFWL_Edit>(
@@ skipping 33 matching lines @@
 
 void CFWL_Edit::SetAliasChar(FX_WCHAR wAlias) {
   if (GetWidget())
     ToEdit(GetWidget())->SetAliasChar(wAlias);
 }
 
 void CFWL_Edit::SetScrollOffset(FX_FLOAT fScrollOffset) {
   if (GetWidget())
     ToEdit(GetWidget())->SetScrollOffset(fScrollOffset);
 }