Split fwl/core class pt I.

xfa/fwl/core/ifwl_scrollbar.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_CORE_IFWL_SCROLLBAR_H_
 #define XFA_FWL_CORE_IFWL_SCROLLBAR_H_
 
 #include "core/fxcrt/fx_system.h"
 #include "xfa/fwl/core/cfwl_evtscroll.h"
 #include "xfa/fwl/core/cfwl_widgetproperties.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_timer.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
 class IFWL_Widget;
 
 #define FWL_STYLEEXT_SCB_Horz (0L << 0)
 #define FWL_STYLEEXT_SCB_Vert (1L << 0)
 
-class IFWL_ScrollBarDP : public IFWL_DataProvider {};
-
 class IFWL_ScrollBar : public IFWL_Widget {
  public:
   IFWL_ScrollBar(const IFWL_App* app,
                  std::unique_ptr<CFWL_WidgetProperties> properties,
                  IFWL_Widget* pOuter);
   ~IFWL_ScrollBar() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
   void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
@@ skipping 109 matching lines @@
   CFX_RectF m_rtMinBtn;
   CFX_RectF m_rtMaxBtn;
   CFX_RectF m_rtMinTrack;
   CFX_RectF m_rtMaxTrack;
   bool m_bCustomLayout;
   FX_FLOAT m_fMinThumb;
   IFWL_ScrollBar::Timer m_Timer;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_SCROLLBAR_H_