Fix CFWL_WidgetImpDelegate hierarchy.

xfa/src/fwl/src/basewidget/include/fwl_editimp.h

Index: xfa/src/fwl/src/basewidget/include/fwl_editimp.h
diff --git a/xfa/src/fwl/src/basewidget/include/fwl_editimp.h b/xfa/src/fwl/src/basewidget/include/fwl_editimp.h
index 79e5ac9ece717514685668d879ec5889d58a3a72..00008569636c434ac00b288cba9888fa50702cc8 100644
--- a/xfa/src/fwl/src/basewidget/include/fwl_editimp.h
+++ b/xfa/src/fwl/src/basewidget/include/fwl_editimp.h
@@ -180,10 +180,10 @@ class CFWL_EditImp : public CFWL_WidgetImp, public IFDE_TxtEdtEventSink {
 class CFWL_EditImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_EditImpDelegate(CFWL_EditImp* pOwner);
-  virtual int32_t OnProcessMessage(CFWL_Message* pMessage);
-  virtual FWL_ERR OnProcessEvent(CFWL_Event* pEvent);
-  virtual FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix = NULL);
+  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
+  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = NULL) override;
 
  protected:
   void DoActivate(CFWL_MsgActivate* pMsg);