Cleanup unused methods and return values in FWL code.

xfa/fwl/core/ifwl_edit.h

Index: xfa/fwl/core/ifwl_edit.h
diff --git a/xfa/fwl/core/ifwl_edit.h b/xfa/fwl/core/ifwl_edit.h
index 688c09c34924b3ccf9801dfcbc27b2f26b114779..e327a2509f9701bdfa34ba303201b7e8631f0ff3 100644
--- a/xfa/fwl/core/ifwl_edit.h
+++ b/xfa/fwl/core/ifwl_edit.h
@@ -19,7 +19,6 @@
 #include "xfa/fwl/lightwidget/cfwl_widget.h"
 #include "xfa/fxgraphics/cfx_path.h"
 
-#define FWL_CLASS_Edit L"FWL_EDIT"
 #define FWL_STYLEEXT_EDT_ReadOnly (1L << 0)
 #define FWL_STYLEEXT_EDT_MultiLine (1L << 1)
 #define FWL_STYLEEXT_EDT_WantReturn (1L << 2)
@@ -111,10 +110,9 @@ class IFWL_Edit : public IFWL_Widget {
   ~IFWL_Edit() override;
 
   // IFWL_Widget:
-  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
   FWL_Type GetClassID() const override;
   FWL_Error Initialize() override;
-  FWL_Error Finalize() override;
+  void 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;