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

xfa/fwl/basewidget/fwl_spinbuttonimp.h

Index: xfa/fwl/basewidget/fwl_spinbuttonimp.h
diff --git a/xfa/fwl/basewidget/fwl_spinbuttonimp.h b/xfa/fwl/basewidget/fwl_spinbuttonimp.h
deleted file mode 100644
index 3eca307cdcad460f5d42768ddf66919b68ce9b07..0000000000000000000000000000000000000000
--- a/xfa/fwl/basewidget/fwl_spinbuttonimp.h
+++ /dev/null
@@ -1,79 +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_SPINBUTTONIMP_H_
-#define XFA_FWL_BASEWIDGET_FWL_SPINBUTTONIMP_H_
-
-#include "xfa/fwl/core/fwl_widgetimp.h"
-#include "xfa/fwl/core/ifwl_timer.h"
-#include "xfa/fwl/core/ifwl_widget.h"
-
-class CFWL_MsgMouse;
-class CFWL_SpinButtonImpDelegate;
-class CFWL_WidgetImpProperties;
-
-class CFWL_SpinButtonImp : public CFWL_WidgetImp, public IFWL_Timer {
- public:
-  CFWL_SpinButtonImp(const CFWL_WidgetImpProperties& properties,
-                     IFWL_Widget* pOuter);
-  ~CFWL_SpinButtonImp() 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_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
-  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = nullptr) override;
-
-  // IFWL_Timer
-  void Run(IFWL_TimerInfo* pTimerInfo) override;
-
-  FWL_Error EnableButton(FX_BOOL bEnable, FX_BOOL bUp = TRUE);
-  FX_BOOL IsButtonEnable(FX_BOOL bUp = TRUE);
-
- protected:
-  friend class CFWL_SpinButtonImpDelegate;
-
-  void DrawUpButton(CFX_Graphics* pGraphics,
-                    IFWL_ThemeProvider* pTheme,
-                    const CFX_Matrix* pMatrix);
-  void DrawDownButton(CFX_Graphics* pGraphics,
-                      IFWL_ThemeProvider* pTheme,
-                      const CFX_Matrix* pMatrix);
-
-  CFX_RectF m_rtClient;
-  CFX_RectF m_rtUpButton;
-  CFX_RectF m_rtDnButton;
-  uint32_t m_dwUpState;
-  uint32_t m_dwDnState;
-  int32_t m_iButtonIndex;
-  FX_BOOL m_bLButtonDwn;
-  IFWL_TimerInfo* m_pTimerInfo;
-};
-
-class CFWL_SpinButtonImpDelegate : public CFWL_WidgetImpDelegate {
- public:
-  CFWL_SpinButtonImpDelegate(CFWL_SpinButtonImp* pOwner);
-  void OnProcessMessage(CFWL_Message* pMessage) override;
-  void OnProcessEvent(CFWL_Event* pEvent) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = nullptr) override;
-
- protected:
-  void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
-  void OnLButtonDown(CFWL_MsgMouse* pMsg);
-  void OnLButtonUp(CFWL_MsgMouse* pMsg);
-  void OnMouseMove(CFWL_MsgMouse* pMsg);
-  void OnMouseLeave(CFWL_MsgMouse* pMsg);
-  void OnKeyDown(CFWL_MsgKey* pMsg);
-  CFWL_SpinButtonImp* m_pOwner;
-};
-
-#endif  // XFA_FWL_BASEWIDGET_FWL_SPINBUTTONIMP_H_