Get rid of NULLs in xfa/

xfa/fxfa/parser/xfa_layout_itemlayout.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_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_
 #define XFA_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_
 
 #include <float.h>
@@ skipping 29 matching lines @@
   XFA_ItemLayoutProcessorStages_Keep,
   XFA_ItemLayoutProcessorStages_Container,
   XFA_ItemLayoutProcessorStages_BreakAfter,
   XFA_ItemLayoutProcessorStages_BookendTrailer,
   XFA_ItemLayoutProcessorStages_Done,
 };
 
 class CXFA_LayoutContext {
  public:
   CXFA_LayoutContext()
-      : m_prgSpecifiedColumnWidths(NULL),
+      : m_prgSpecifiedColumnWidths(nullptr),
         m_fCurColumnWidth(0),
         m_bCurColumnWidthAvaiable(FALSE),
-        m_pOverflowProcessor(NULL),
-        m_pOverflowNode(NULL) {}
-  ~CXFA_LayoutContext() { m_pOverflowProcessor = NULL; }
+        m_pOverflowProcessor(nullptr),
+        m_pOverflowNode(nullptr) {}
+  ~CXFA_LayoutContext() { m_pOverflowProcessor = nullptr; }
   CFX_ArrayTemplate<FX_FLOAT>* m_prgSpecifiedColumnWidths;
   FX_FLOAT m_fCurColumnWidth;
   FX_BOOL m_bCurColumnWidthAvaiable;
   CXFA_ItemLayoutProcessor* m_pOverflowProcessor;
   CXFA_Node* m_pOverflowNode;
 };
 
 class CXFA_ItemLayoutProcessor {
  public:
   CXFA_ItemLayoutProcessor(CXFA_Node* pNode, CXFA_LayoutPageMgr* pPageMgr);
 
   XFA_ItemLayoutProcessorResult DoLayout(
       FX_BOOL bUseBreakControl,
       FX_FLOAT fHeightLimit,
       FX_FLOAT fRealHeight = XFA_LAYOUT_FLOAT_MAX,
-      CXFA_LayoutContext* pContext = NULL);
+      CXFA_LayoutContext* pContext = nullptr);
 
   void GetCurrentComponentPos(FX_FLOAT& fAbsoluteX, FX_FLOAT& fAbsoluteY);
 
   void GetCurrentComponentSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight);
 
   void SetCurrentComponentPos(FX_FLOAT fAbsoluteX, FX_FLOAT fAbsoluteY);
 
   void SetCurrentComponentSize(FX_FLOAT fWidth, FX_FLOAT fHeight);
   inline CXFA_Node* GetFormNode() { return m_pFormNode; }
-  inline FX_BOOL HasLayoutItem() { return m_pLayoutItem != NULL; }
+  inline FX_BOOL HasLayoutItem() { return !!m_pLayoutItem; }
   CXFA_ContentLayoutItem* ExtractLayoutItem();
 
   static FX_BOOL IncrementRelayoutNode(CXFA_LayoutProcessor* pLayoutProcessor,
                                        CXFA_Node* pNode,
                                        CXFA_Node* pParentNode);
   static void CalculatePositionedContainerPos(CXFA_Node* pNode,
                                               FX_FLOAT fWidth,
                                               FX_FLOAT fHeight,
                                               FX_FLOAT& fAbsoluteX,
                                               FX_FLOAT& fAbsoluteY);
@@ skipping 39 matching lines @@
   void ProcessUnUseOverFlow(CXFA_Node* pLeaderNode,
                             CXFA_Node* pTrailerNode,
                             CXFA_ContentLayoutItem* pTrailerItem,
                             CXFA_Node* pFormNode);
   void ProcessUnUseBinds(CXFA_Node* pFormNode);
   FX_BOOL IsAddNewRowForTrailer(CXFA_ContentLayoutItem* pTrailerItem);
   FX_BOOL JudgeLeaderOrTrailerForOccur(CXFA_Node* pFormNode);
   CXFA_ContentLayoutItem* CreateContentLayoutItem(CXFA_Node* pFormNode);
 
  protected:
-  void DoLayoutPositionedContainer(CXFA_LayoutContext* pContext = NULL);
+  void DoLayoutPositionedContainer(CXFA_LayoutContext* pContext = nullptr);
   void DoLayoutTableContainer(CXFA_Node* pLayoutNode);
   XFA_ItemLayoutProcessorResult DoLayoutFlowedContainer(
       FX_BOOL bUseBreakControl,
       XFA_ATTRIBUTEENUM eFlowStrategy,
       FX_FLOAT fHeightLimit,
       FX_FLOAT fRealHeight,
-      CXFA_LayoutContext* pContext = NULL,
+      CXFA_LayoutContext* pContext = nullptr,
       FX_BOOL bRootForceTb = FALSE);
   void DoLayoutField();
   void XFA_ItemLayoutProcessor_GotoNextContainerNode(
       CXFA_Node*& pCurActionNode,
       XFA_ItemLayoutProcessorStages& nCurStage,
       CXFA_Node* pParentContainer,
       FX_BOOL bUsePageBreak);
 
   FX_BOOL ProcessKeepNodesForCheckNext(CXFA_Node*& pCurActionNode,
                                        XFA_ItemLayoutProcessorStages& nCurStage,
@@ skipping 28 matching lines @@
   FX_FLOAT m_fLastRowWidth;
   FX_FLOAT m_fLastRowY;
   FX_FLOAT m_fWidthLimite;
   FX_BOOL m_bUseInheriated;
   XFA_ItemLayoutProcessorResult m_ePreProcessRs;
   FX_BOOL m_bHasAvailHeight;
 };
 FX_BOOL XFA_ItemLayoutProcessor_IsTakingSpace(CXFA_Node* pNode);
 
 #endif  // XFA_FXFA_PARSER_XFA_LAYOUT_ITEMLAYOUT_H_