Cleanup FWL default values part II.

xfa/fwl/core/cfwl_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_CFWL_SPINBUTTON_H_
 #define XFA_FWL_CORE_CFWL_SPINBUTTON_H_
 
 #include <memory>
@@ skipping 26 matching lines @@
  private:
   class Timer : public CFWL_Timer {
    public:
     explicit Timer(CFWL_SpinButton* pToolTip);
     ~Timer() override {}
 
     void Run(CFWL_TimerInfo* pTimerInfo) override;
   };
   friend class CFWL_SpinButton::Timer;
 
-  void EnableButton(bool bEnable, bool bUp = true);
-  bool IsButtonEnabled(bool bUp = true);
+  void DisableButton();
+  bool IsButtonEnabled(bool bUp);
   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;
   CFWL_SpinButton::Timer m_Timer;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_SPINBUTTON_H_