Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/fwl_caretimp.h

Index: xfa/fwl/basewidget/fwl_caretimp.h
diff --git a/xfa/fwl/basewidget/fwl_caretimp.h b/xfa/fwl/basewidget/fwl_caretimp.h
index c579beeed3804dca9a7f820d8a464e5f458c2805..b1ebcfa1847f29e1d91356ef01c9eb300c0c6aed 100644
--- a/xfa/fwl/basewidget/fwl_caretimp.h
+++ b/xfa/fwl/basewidget/fwl_caretimp.h
@@ -9,6 +9,7 @@
 
 #include "xfa/fwl/core/fwl_widgetimp.h"
 #include "xfa/fwl/core/ifwl_timer.h"
+#include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fxgraphics/cfx_color.h"
 
 class CFWL_WidgetImpProperties;
@@ -19,26 +20,25 @@ class CFWL_CaretImp : public CFWL_WidgetImp {
  public:
   CFWL_CaretImp(const CFWL_WidgetImpProperties& properties,
                 IFWL_Widget* pOuter);
-  virtual ~CFWL_CaretImp();
+  ~CFWL_CaretImp() override;
 
-  virtual FWL_Error GetClassName(CFX_WideString& wsClass) const;
-  virtual uint32_t GetClassID() const;
+  // CFWL_WidgetImp
+  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
+  FWL_Type GetClassID() const override;
+  FWL_Error Initialize() override;
+  FWL_Error Finalize() override;
+  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = nullptr) override;
 
-  virtual FWL_Error Initialize();
-  virtual FWL_Error Finalize();
-
-  virtual FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix = NULL);
-
-  virtual void ShowCaret(FX_BOOL bFlag = TRUE);
-  virtual FWL_Error GetFrequency(uint32_t& elapse);
-  virtual FWL_Error SetFrequency(uint32_t elapse);
-  virtual FWL_Error SetColor(CFX_Color crFill);
+  void ShowCaret(FX_BOOL bFlag = TRUE);
+  FWL_Error GetFrequency(uint32_t& elapse);
+  FWL_Error SetFrequency(uint32_t elapse);
+  FWL_Error SetColor(CFX_Color crFill);
 
  protected:
-  void DrawCaretBK(CFX_Graphics* pGraphics,
-                   IFWL_ThemeProvider* pTheme,
-                   const CFX_Matrix* pMatrix);
+  friend class CFWL_CaretImpDelegate;
+  friend class CFWL_CaretTimer;
+
   class CFWL_CaretTimer : public IFWL_Timer {
    public:
     explicit CFWL_CaretTimer(CFWL_CaretImp* pCaret);
@@ -46,14 +46,18 @@ class CFWL_CaretImp : public CFWL_WidgetImp {
     int32_t Run(FWL_HTIMER hTimer) override;
     CFWL_CaretImp* const m_pCaret;
   };
+
+  void DrawCaretBK(CFX_Graphics* pGraphics,
+                   IFWL_ThemeProvider* pTheme,
+                   const CFX_Matrix* pMatrix);
+
   CFWL_CaretTimer* m_pTimer;
   FWL_HTIMER m_hTimer;
   uint32_t m_dwElapse;
   CFX_Color m_crFill;
   FX_BOOL m_bSetColor;
-  friend class CFWL_CaretImpDelegate;
-  friend class CFWL_CaretTimer;
 };
+
 class CFWL_CaretImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_CaretImpDelegate(CFWL_CaretImp* pOwner);