Unify CFWL_WidgetProperties and CFWL_WidgetImpProperties.

xfa/fwl/core/ifwl_comboedit.cpp

Index: xfa/fwl/core/ifwl_comboedit.cpp
diff --git a/xfa/fwl/core/ifwl_comboedit.cpp b/xfa/fwl/core/ifwl_comboedit.cpp
index 26106e14cf1335d76ebb3c6fcf180187ffb1c72d..a8b04fda890bda54681a70e8da4558c6c43b26be 100644
--- a/xfa/fwl/core/ifwl_comboedit.cpp
+++ b/xfa/fwl/core/ifwl_comboedit.cpp
@@ -9,10 +9,11 @@
 #include "xfa/fde/cfde_txtedtengine.h"
 #include "xfa/fwl/core/ifwl_combobox.h"
 
-IFWL_ComboEdit::IFWL_ComboEdit(const IFWL_App* app,
-                               const CFWL_WidgetImpProperties& properties,
-                               IFWL_Widget* pOuter)
-    : IFWL_Edit(app, properties, pOuter) {
+IFWL_ComboEdit::IFWL_ComboEdit(
+    const IFWL_App* app,
+    std::unique_ptr<CFWL_WidgetProperties> properties,
+    IFWL_Widget* pOuter)
+    : IFWL_Edit(app, std::move(properties), pOuter) {
   m_pOuter = static_cast<IFWL_ComboBox*>(pOuter);
 }