Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/fwl_editimp.cpp

Index: xfa/fwl/basewidget/fwl_editimp.cpp
diff --git a/xfa/fwl/basewidget/fwl_editimp.cpp b/xfa/fwl/basewidget/fwl_editimp.cpp
index 8b4dd39321cd95cbe771494d31d6f5c5e0a2b1e3..a70c3129985c2bbb40638bceb0cd3e1a6d019d25 100644
--- a/xfa/fwl/basewidget/fwl_editimp.cpp
+++ b/xfa/fwl/basewidget/fwl_editimp.cpp
@@ -231,9 +231,7 @@ FWL_ERR CFWL_EditImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Edit;
   return FWL_ERR_Succeeded;
 }
-uint32_t CFWL_EditImp::GetClassID() const {
-  return FWL_CLASSHASH_Edit;
-}
+
 FWL_ERR CFWL_EditImp::Initialize() {
   if (CFWL_WidgetImp::Initialize() != FWL_ERR_Succeeded)
     return FWL_ERR_Indefinite;
@@ -1456,7 +1454,7 @@ void CFWL_EditImp::Layout() {
       m_rtEngine.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width,
                          pUIMargin->height);
     }
-  } else if (m_pOuter->GetClassID() == FWL_CLASSHASH_DateTimePicker) {
+  } else if (m_pOuter->GetClassID() == FWL_Type::DateTimePicker) {
     CFWL_ThemePart part;
     part.m_pWidget = m_pOuter;
     CFX_RectF* pUIMargin =