Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/basewidget/fwl_barcodeimp.cpp

Index: xfa/fwl/basewidget/fwl_barcodeimp.cpp
diff --git a/xfa/fwl/basewidget/fwl_barcodeimp.cpp b/xfa/fwl/basewidget/fwl_barcodeimp.cpp
index ce9d083d83662a2820209e22f8827aad7b43d3eb..57a3c93e9ee1a54d78ea28d0aa94b81ff10d8bbd 100644
--- a/xfa/fwl/basewidget/fwl_barcodeimp.cpp
+++ b/xfa/fwl/basewidget/fwl_barcodeimp.cpp
@@ -38,13 +38,16 @@ CFWL_BarcodeImp::CFWL_BarcodeImp(const CFWL_WidgetImpProperties& properties,
 CFWL_BarcodeImp::~CFWL_BarcodeImp() {
   ReleaseBarcodeEngine();
 }
+
 FWL_Error CFWL_BarcodeImp::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Barcode;
   return FWL_Error::Succeeded;
 }
-uint32_t CFWL_BarcodeImp::GetClassID() const {
-  return FWL_CLASSHASH_Barcode;
+
+FWL_Type CFWL_BarcodeImp::GetClassID() const {
+  return FWL_Type::Barcode;
 }
+
 FWL_Error CFWL_BarcodeImp::Initialize() {
   if (!m_pDelegate) {
     m_pDelegate = new CFWL_BarcodeImpDelegate(this);