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

xfa/fwl/basewidget/fwl_scrollbarimp.h

Index: xfa/fwl/basewidget/fwl_scrollbarimp.h
diff --git a/xfa/fwl/basewidget/fwl_scrollbarimp.h b/xfa/fwl/basewidget/fwl_scrollbarimp.h
deleted file mode 100644
index 4a7a4634abf1c4dc48d37377780db0498f2bdd81..0000000000000000000000000000000000000000
--- a/xfa/fwl/basewidget/fwl_scrollbarimp.h
+++ /dev/null
@@ -1,147 +0,0 @@
-// 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_BASEWIDGET_FWL_SCROLLBARIMP_H_
-#define XFA_FWL_BASEWIDGET_FWL_SCROLLBARIMP_H_
-
-#include "xfa/fwl/core/fwl_widgetimp.h"
-#include "xfa/fwl/core/ifwl_timer.h"
-#include "xfa/fwl/core/ifwl_widget.h"
-
-class CFWL_WidgetImpProperties;
-class IFWL_Widget;
-class CFWL_ScrollBarImpDelegate;
-
-class CFWL_ScrollBarImp : public CFWL_WidgetImp, public IFWL_Timer {
- public:
-  CFWL_ScrollBarImp(const CFWL_WidgetImpProperties& properties,
-                    IFWL_Widget* pOuter);
-  ~CFWL_ScrollBarImp() override;
-
-  // CFWL_WidgetImp
-  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
-  FWL_Type GetClassID() const override;
-  FWL_Error Initialize() override;
-  FWL_Error Finalize() override;
-  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
-  FWL_Error Update() override;
-  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = nullptr) override;
-
-  // IFWL_Timer
-  void Run(IFWL_TimerInfo* pTimerInfo) override;
-
-  FX_BOOL IsVertical();
-  FWL_Error GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax);
-  FWL_Error SetRange(FX_FLOAT fMin, FX_FLOAT fMax);
-  FX_FLOAT GetPageSize();
-  FWL_Error SetPageSize(FX_FLOAT fPageSize);
-  FX_FLOAT GetStepSize();
-  FWL_Error SetStepSize(FX_FLOAT fStepSize);
-  FX_FLOAT GetPos();
-  FWL_Error SetPos(FX_FLOAT fPos);
-  FX_FLOAT GetTrackPos();
-  FWL_Error SetTrackPos(FX_FLOAT fTrackPos);
-  FX_BOOL DoScroll(uint32_t dwCode, FX_FLOAT fPos = 0.0f);
-  FWL_Error SetOuter(IFWL_Widget* pOuter);
-
- protected:
-  friend class CFWL_ScrollBarImpDelegate;
-
-  void DrawTrack(CFX_Graphics* pGraphics,
-                 IFWL_ThemeProvider* pTheme,
-                 FX_BOOL bLower = TRUE,
-                 const CFX_Matrix* pMatrix = nullptr);
-  void DrawArrowBtn(CFX_Graphics* pGraphics,
-                    IFWL_ThemeProvider* pTheme,
-                    FX_BOOL bMinBtn = TRUE,
-                    const CFX_Matrix* pMatrix = nullptr);
-  void DrawThumb(CFX_Graphics* pGraphics,
-                 IFWL_ThemeProvider* pTheme,
-                 const CFX_Matrix* pMatrix = nullptr);
-  void Layout();
-  void CalcButtonLen();
-  void CalcMinButtonRect(CFX_RectF& rect);
-  void CalcMaxButtonRect(CFX_RectF& rect);
-  void CalcThumbButtonRect(CFX_RectF& rect);
-  void CalcMinTrackRect(CFX_RectF& rect);
-  void CalcMaxTrackRect(CFX_RectF& rect);
-  FX_FLOAT GetTrackPointPos(FX_FLOAT fx, FX_FLOAT fy);
-  void GetTrackRect(CFX_RectF& rect, FX_BOOL bLower = TRUE);
-  FX_BOOL SendEvent();
-  FX_BOOL OnScroll(uint32_t dwCode, FX_FLOAT fPos);
-
-  IFWL_TimerInfo* m_pTimerInfo;
-  FX_FLOAT m_fRangeMin;
-  FX_FLOAT m_fRangeMax;
-  FX_FLOAT m_fPageSize;
-  FX_FLOAT m_fStepSize;
-  FX_FLOAT m_fPos;
-  FX_FLOAT m_fTrackPos;
-  int32_t m_iMinButtonState;
-  int32_t m_iMaxButtonState;
-  int32_t m_iThumbButtonState;
-  int32_t m_iMinTrackState;
-  int32_t m_iMaxTrackState;
-  FX_FLOAT m_fLastTrackPos;
-  FX_FLOAT m_cpTrackPointX;
-  FX_FLOAT m_cpTrackPointY;
-  int32_t m_iMouseWheel;
-  FX_BOOL m_bTrackMouseLeave;
-  FX_BOOL m_bMouseHover;
-  FX_BOOL m_bMouseDown;
-  FX_BOOL m_bRepaintThumb;
-  FX_FLOAT m_fButtonLen;
-  FX_BOOL m_bMinSize;
-  CFX_RectF m_rtClient;
-  CFX_RectF m_rtThumb;
-  CFX_RectF m_rtMinBtn;
-  CFX_RectF m_rtMaxBtn;
-  CFX_RectF m_rtMinTrack;
-  CFX_RectF m_rtMaxTrack;
-  FX_BOOL m_bCustomLayout;
-  FX_FLOAT m_fMinThumb;
-};
-
-class CFWL_ScrollBarImpDelegate : public CFWL_WidgetImpDelegate {
- public:
-  CFWL_ScrollBarImpDelegate(CFWL_ScrollBarImp* pOwner);
-  void OnProcessMessage(CFWL_Message* pMessage) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = nullptr) override;
-
- protected:
-  void OnLButtonDown(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
-  void OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
-  void OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
-  void OnMouseLeave();
-  void OnMouseWheel(FX_FLOAT fx,
-                    FX_FLOAT fy,
-                    uint32_t dwFlags,
-                    FX_FLOAT fDeltaX,
-                    FX_FLOAT fDeltaY);
-  void DoMouseDown(int32_t iItem,
-                   const CFX_RectF& rtItem,
-                   int32_t& iState,
-                   FX_FLOAT fx,
-                   FX_FLOAT fy);
-  void DoMouseUp(int32_t iItem,
-                 const CFX_RectF& rtItem,
-                 int32_t& iState,
-                 FX_FLOAT fx,
-                 FX_FLOAT fy);
-  void DoMouseMove(int32_t iItem,
-                   const CFX_RectF& rtItem,
-                   int32_t& iState,
-                   FX_FLOAT fx,
-                   FX_FLOAT fy);
-  void DoMouseLeave(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
-  void DoMouseHover(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
-
-  CFWL_ScrollBarImp* m_pOwner;
-};
-
-#endif  // XFA_FWL_BASEWIDGET_FWL_SCROLLBARIMP_H_