Fix an assertion failure in CFX_RTFBreak::SetLineWidth()

xfa/src/fgas/src/layout/fx_rtfbreak.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 _FX_RTFBREAK_IMP
 #define _FX_RTFBREAK_IMP
 
 #include "core/include/fxcrt/fx_arb.h"
@@ skipping 49 matching lines @@
   int32_t m_iStart;
   int32_t m_iWidth;
   int32_t m_iArabicChars;
   int32_t m_iMBCSChars;
 };
 class CFX_RTFBreak : public IFX_RTFBreak {
  public:
   CFX_RTFBreak(FX_DWORD dwPolicies);
   ~CFX_RTFBreak();
   virtual void Release() { delete this; }
-  virtual void SetLineWidth(FX_FLOAT fLineStart, FX_FLOAT fLineEnd);
-  virtual void SetLinePos(FX_FLOAT fLinePos);
+  void SetLineBoundary(FX_FLOAT fLineStart, FX_FLOAT fLineEnd) override final;
+  void SetLineStartPos(FX_FLOAT fLinePos) override final;
   virtual FX_DWORD GetLayoutStyles() const { return m_dwLayoutStyles; }
   virtual void SetLayoutStyles(FX_DWORD dwLayoutStyles);
   virtual void SetFont(IFX_Font* pFont);
   virtual void SetFontSize(FX_FLOAT fFontSize);
   virtual void SetTabWidth(FX_FLOAT fTabWidth);
   virtual void AddPositionedTab(FX_FLOAT fTabPos);
   virtual void SetPositionedTabs(const CFX_FloatArray& tabs);
   virtual void ClearPositionedTabs();
   virtual void SetDefaultChar(FX_WCHAR wch);
   virtual void SetLineBreakChar(FX_WCHAR wch);
@@ skipping 25 matching lines @@
   FX_DWORD AppendChar_CharCode(FX_WCHAR wch);
   FX_DWORD AppendChar_Combination(CFX_RTFChar* pCurChar, int32_t iRotation);
   FX_DWORD AppendChar_Tab(CFX_RTFChar* pCurChar, int32_t iRotation);
   FX_DWORD AppendChar_Control(CFX_RTFChar* pCurChar, int32_t iRotation);
   FX_DWORD AppendChar_Arabic(CFX_RTFChar* pCurChar, int32_t iRotation);
   FX_DWORD AppendChar_Others(CFX_RTFChar* pCurChar, int32_t iRotation);
 
  protected:
   FX_DWORD m_dwPolicies;
   IFX_ArabicChar* m_pArabicChar;
-  int32_t m_iLineStart;
-  int32_t m_iLineEnd;
+  int32_t m_iBoundaryStart;
+  int32_t m_iBoundaryEnd;
   FX_DWORD m_dwLayoutStyles;
   FX_BOOL m_bPagination;
   FX_BOOL m_bVertical;
   FX_BOOL m_bSingleLine;
   FX_BOOL m_bCharCode;
   IFX_Font* m_pFont;
   int32_t m_iFontHeight;
   int32_t m_iFontSize;
   int32_t m_iTabWidth;
   CFX_Int32Array m_PositionedTabs;
@@ skipping 36 matching lines @@
                      FX_BOOL bAllChars = FALSE);
   FX_BOOL EndBreak_SplitLine(CFX_RTFLine* pNextLine,
                              FX_BOOL bAllChars,
                              FX_DWORD dwStatus);
   void EndBreak_BidiLine(CFX_TPOArray& tpos, FX_DWORD dwStatus);
   void EndBreak_Alignment(CFX_TPOArray& tpos,
                           FX_BOOL bAllChars,
                           FX_DWORD dwStatus);
 };
 #endif