Rename IFWL classes which do not have CFWL equivalents

xfa/fwl/core/ifwl_spinbutton.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_SPINBUTTON_H_
-#define XFA_FWL_CORE_IFWL_SPINBUTTON_H_
-
-#include <memory>
-
-#include "xfa/fwl/core/cfwl_event.h"
-#include "xfa/fwl/core/cfwl_timer.h"
-#include "xfa/fwl/core/ifwl_widget.h"
-#include "xfa/fxfa/cxfa_eventparam.h"
-
-#define FWL_STYLEEXE_SPB_Vert (1L << 0)
-
-class CFWL_MsgMouse;
-class CFWL_WidgetProperties;
-
-class IFWL_SpinButton : public IFWL_Widget {
- public:
-  IFWL_SpinButton(const CFWL_App* app,
-                  std::unique_ptr<CFWL_WidgetProperties> properties);
-  ~IFWL_SpinButton() override;
-
-  // IFWL_Widget
-  FWL_Type GetClassID() const override;
-  void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
-  void Update() override;
-  FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
-  void DrawWidget(CFX_Graphics* pGraphics,
-                  const CFX_Matrix* pMatrix = nullptr) override;
-  void OnProcessMessage(CFWL_Message* pMessage) override;
-  void OnProcessEvent(CFWL_Event* pEvent) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix) override;
-
- private:
-  class Timer : public CFWL_Timer {
-   public:
-    explicit Timer(IFWL_SpinButton* pToolTip);
-    ~Timer() override {}
-
-    void Run(CFWL_TimerInfo* pTimerInfo) override;
-  };
-  friend class IFWL_SpinButton::Timer;
-
-  void EnableButton(bool bEnable, bool bUp = true);
-  bool IsButtonEnabled(bool bUp = true);
-  void DrawUpButton(CFX_Graphics* pGraphics,
-                    IFWL_ThemeProvider* pTheme,
-                    const CFX_Matrix* pMatrix);
-  void DrawDownButton(CFX_Graphics* pGraphics,
-                      IFWL_ThemeProvider* pTheme,
-                      const CFX_Matrix* pMatrix);
-  void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
-  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);
-
-  CFX_RectF m_rtClient;
-  CFX_RectF m_rtUpButton;
-  CFX_RectF m_rtDnButton;
-  uint32_t m_dwUpState;
-  uint32_t m_dwDnState;
-  int32_t m_iButtonIndex;
-  bool m_bLButtonDwn;
-  CFWL_TimerInfo* m_pTimerInfo;
-  IFWL_SpinButton::Timer m_Timer;
-};
-
-#endif  // XFA_FWL_CORE_IFWL_SPINBUTTON_H_