Remove unused FWL flags

xfa/fwl/basewidget/ifwl_scrollbar.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_SCROLLBAR_H_
 #define XFA_FWL_BASEWIDGET_IFWL_SCROLLBAR_H_
 
 #include "xfa/fwl/core/fwl_widgetimp.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "core/fxcrt/include/fx_system.h"
 #include "xfa/fwl/core/fwl_error.h"
 
 #define FWL_CLASS_ScrollBar L"FWL_SCROLLBAR"
 #define FWL_CLASSHASH_ScrollBar 2826584844
 #define FWL_STYLEEXT_SCB_Horz (0L << 0)
 #define FWL_STYLEEXT_SCB_Vert (1L << 0)
-#define FWL_WGTHITTEST_SCB_ForeArrow FWL_WGTHITTEST_MAX + 1
-#define FWL_WGTHITTEST_SCB_BackArrow FWL_WGTHITTEST_MAX + 2
-#define FWL_WGTHITTEST_SCB_LowerTrack FWL_WGTHITTEST_MAX + 3
-#define FWL_WGTHITTEST_SCB_UpperTrack FWL_WGTHITTEST_MAX + 4
-#define FWL_WGTHITTEST_SCB_Thumb FWL_WGTHITTEST_MAX + 5
 
 enum FWL_SCBCODE {
   FWL_SCBCODE_None = 1,
   FWL_SCBCODE_Min,
   FWL_SCBCODE_Max,
   FWL_SCBCODE_PageBackward,
   FWL_SCBCODE_PageForward,
   FWL_SCBCODE_StepBackward,
   FWL_SCBCODE_StepForward,
   FWL_SCBCODE_Pos,
@@ skipping 19 matching lines @@
   FWL_ERR SetPos(FX_FLOAT fPos);
   FX_FLOAT GetTrackPos();
   FWL_ERR SetTrackPos(FX_FLOAT fTrackPos);
   FX_BOOL DoScroll(uint32_t dwCode, FX_FLOAT fPos = 0.0f);
 
  protected:
   IFWL_ScrollBar();
 };
 
 #endif  // XFA_FWL_BASEWIDGET_IFWL_SCROLLBAR_H_