Remove NULL in xfa/

xfa/fwl/basewidget/fwl_scrollbarimp.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_BASEWIDGET_FWL_SCROLLBARIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_SCROLLBARIMP_H_
 
 #include "xfa/fwl/core/fwl_widgetimp.h"
@@ skipping 36 matching lines @@
   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 = NULL);
+                 const CFX_Matrix* pMatrix = nullptr);
   void DrawArrowBtn(CFX_Graphics* pGraphics,
                     IFWL_ThemeProvider* pTheme,
                     FX_BOOL bMinBtn = TRUE,
-                    const CFX_Matrix* pMatrix = NULL);
+                    const CFX_Matrix* pMatrix = nullptr);
   void DrawThumb(CFX_Graphics* pGraphics,
                  IFWL_ThemeProvider* pTheme,
-                 const CFX_Matrix* pMatrix = NULL);
+                 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();
@@ skipping 29 matching lines @@
   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 = NULL) override;
+                    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,
@@ skipping 13 matching lines @@
                    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_