Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/fwl_editimp.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_FWL_EDITIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_EDITIMP_H_
 
 #include <memory>
@@ skipping 13 matching lines @@
 class CFWL_EditImp;
 class CFWL_EditImpDelegate;
 
 class CFWL_EditImp : public CFWL_WidgetImp {
  public:
   CFWL_EditImp(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
   ~CFWL_EditImp() override;
 
   // CFWL_WidgetImp:
   FWL_Error GetClassName(CFX_WideString& wsClass) const override;
-  uint32_t GetClassID() const override;
+  FWL_Type GetClassID() const override;
   FWL_Error Initialize() override;
   FWL_Error Finalize() override;
   FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
   FWL_Error SetWidgetRect(const CFX_RectF& rect) override;
   FWL_Error Update() override;
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
   void SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE) override;
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = NULL) override;
   FWL_Error SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) override;
@@ skipping 146 matching lines @@
   void OnButtonDblClk(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnKeyDown(CFWL_MsgKey* pMsg);
   void OnChar(CFWL_MsgKey* pMsg);
   FX_BOOL OnScroll(IFWL_ScrollBar* pScrollBar, uint32_t dwCode, FX_FLOAT fPos);
   void DoCursor(CFWL_MsgMouse* pMsg);
   CFWL_EditImp* m_pOwner;
 };
 
 #endif  // XFA_FWL_BASEWIDGET_FWL_EDITIMP_H_