Unify CFWL_WidgetProperties and CFWL_WidgetImpProperties.

xfa/fwl/core/ifwl_datetimecalendar.cpp

Index: xfa/fwl/core/ifwl_datetimecalendar.cpp
diff --git a/xfa/fwl/core/ifwl_datetimecalendar.cpp b/xfa/fwl/core/ifwl_datetimecalendar.cpp
index 4e274fca7f3c6d8db21aaa51815a4feb3d43710b..c9f640fe6318583ad87cd0b85af0da3efa1cc45e 100644
--- a/xfa/fwl/core/ifwl_datetimecalendar.cpp
+++ b/xfa/fwl/core/ifwl_datetimecalendar.cpp
@@ -13,9 +13,9 @@
 
 IFWL_DateTimeCalendar::IFWL_DateTimeCalendar(
     const IFWL_App* app,
-    const CFWL_WidgetImpProperties& properties,
+    std::unique_ptr<CFWL_WidgetProperties> properties,
     IFWL_Widget* pOuter)
-    : IFWL_MonthCalendar(app, properties, pOuter), m_bFlag(false) {}
+    : IFWL_MonthCalendar(app, std::move(properties), pOuter), m_bFlag(false) {}
 
 void IFWL_DateTimeCalendar::OnProcessMessage(CFWL_Message* pMessage) {
   CFWL_MessageType dwCode = pMessage->GetClassID();