Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/lightwidget/cfwl_datetimepicker.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_LIGHTWIDGET_CFWL_DATETIMEPICKER_H_
 #define XFA_FWL_LIGHTWIDGET_CFWL_DATETIMEPICKER_H_
 
-#include "xfa/fwl/basewidget/ifwl_datetimepicker.h"
+#include "xfa/fwl/core/ifwl_datetimepicker.h"
 #include "xfa/fwl/lightwidget/cfwl_widget.h"
 
 class CFWL_DateTimePicker : public CFWL_Widget {
  public:
   CFWL_DateTimePicker();
   ~CFWL_DateTimePicker() override;
 
   IFWL_DateTimePicker* GetWidget() override;
   const IFWL_DateTimePicker* GetWidget() const override;
 
@@ skipping 40 matching lines @@
     int32_t m_iYear;
     int32_t m_iMonth;
     int32_t m_iDay;
     CFX_WideString m_wsData;
   };
 
   CFWL_DateTimePickerDP m_DateTimePickerDP;
 };
 
 #endif  // XFA_FWL_LIGHTWIDGET_CFWL_DATETIMEPICKER_H_