Remove some FWL code.

xfa/fwl/basewidget/ifwl_listbox.h

 // 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
 
 #ifndef XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_
 #define XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_
 
 #include "xfa/fwl/core/ifwl_widget.h"
@@ skipping 28 matching lines @@
 #define FWL_PARTSTATE_LTB_Normal (0L << 0)
 #define FWL_PARTSTATE_LTB_Selected (1L << 0)
 #define FWL_PARTSTATE_LTB_Disabled (2L << 0)
 #define FWL_PARTSTATE_LTB_Focused (1L << 2)
 #define FWL_PARTSTATE_LTB_UnChecked (0L << 3)
 #define FWL_PARTSTATE_LTB_Checked (1L << 3)
 #define FWL_PARTSTATE_LTB_Mask (3L << 0)
 #define FWL_WGTHITTEST_LTB_Item FWL_WGTHITTEST_MAX + 1
 #define FWL_WGTHITTEST_LTB_HScrollBar FWL_WGTHITTEST_MAX + 2
 #define FWL_WGTHITTEST_LTB_VScrollBar FWL_WGTHITTEST_MAX + 3
-#define FWL_EVT_LTB_SelChanged L"FWL_EVENT_LTB_SelChanged"
-#define FWL_EVT_LTB_DrawItem L"FWL_EVENT_LTB_DrawItem"
+// TODO(dsinclair): Event hash is hash of string, cleanup. pdfium:474
 #define FWL_EVTHASH_LTB_SelChanged 1701781688
 #define FWL_EVTHASH_LTB_DrawItem 1050853991
 
 typedef struct FWL_HLISTITEM_ { void* pData; } * FWL_HLISTITEM;
 
 class CFX_DIBitmap;
 class IFWL_ListBoxDP;
 
 struct FWL_ListBoxItemData {
   IFWL_ListBoxDP* pDataProvider;
@@ skipping 72 matching lines @@
   FWL_ERR SetSelItem(FWL_HLISTITEM hItem, FX_BOOL bSelect = TRUE);
   FWL_ERR GetItemText(FWL_HLISTITEM hItem, CFX_WideString& wsText);
   FWL_ERR GetScrollPos(FX_FLOAT& fPos, FX_BOOL bVert = TRUE);
   FWL_ERR* Sort(IFWL_ListBoxCompare* pCom);
 
  protected:
   IFWL_ListBox();
 };
 
 #endif  // XFA_FWL_BASEWIDGET_IFWL_LISTBOX_H_