Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/ifwl_combobox.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_COMBOBOX_H_
 #define XFA_FWL_BASEWIDGET_IFWL_COMBOBOX_H_
 
 #include "xfa/fwl/basewidget/ifwl_listbox.h"
 #include "xfa/fxgraphics/include/cfx_graphics.h"
 
 class CFWL_WidgetImpProperties;
 class IFWL_ComboBox;
 
 #define FWL_CLASS_ComboBox L"FWL_COMBOBOX"
-#define FWL_CLASSHASH_ComboBox 602353697
 #define FWL_STYLEEXT_CMB_DropList (0L << 0)
 #define FWL_STYLEEXT_CMB_DropDown (1L << 0)
 #define FWL_STYLEEXT_CMB_Sort (1L << 1)
 #define FWL_STYLEEXT_CMB_ListDrag (1L << 2)
 #define FWL_STYLEEXT_CMB_OwnerDraw (1L << 3)
 #define FWL_STYLEEXT_CMB_EditHNear (0L << 4)
 #define FWL_STYLEEXT_CMB_EditHCenter (1L << 4)
 #define FWL_STYLEEXT_CMB_EditHFar (2L << 4)
 #define FWL_STYLEEXT_CMB_EditVNear (0L << 6)
 #define FWL_STYLEEXT_CMB_EditVCenter (1L << 6)
@@ skipping 83 matching lines @@
   FX_BOOL EditDeSelect();
   FWL_Error GetBBox(CFX_RectF& rect);
   FWL_Error EditModifyStylesEx(uint32_t dwStylesExAdded,
                                uint32_t dwStylesExRemoved);
 
  protected:
   IFWL_ComboBox();
 };
 
 #endif  // XFA_FWL_BASEWIDGET_IFWL_COMBOBOX_H_