Store WideString, not raw pointer, in FX_TXTRUN

xfa/fgas/layout/fgas_textbreak.cpp

 // 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
 
 #include "xfa/fgas/layout/fgas_textbreak.h"
 
 #include <algorithm>
 
@@ skipping 1156 matching lines @@
 int32_t CFX_TxtBreak::GetDisplayPos(const FX_TXTRUN* pTxtRun,
                                     FXTEXT_CHARPOS* pCharPos,
                                     FX_BOOL bCharCode,
                                     CFX_WideString* pWSForms,
                                     FX_AdjustCharDisplayPos pAdjustPos) const {
   if (pTxtRun == NULL || pTxtRun->iLength < 1) {
     return 0;
   }
   IFX_TxtAccess* pAccess = pTxtRun->pAccess;
   void* pIdentity = pTxtRun->pIdentity;
-  const FX_WCHAR* pStr = pTxtRun->pStr;
+  const FX_WCHAR* pStr = pTxtRun->wsStr.c_str();
   int32_t* pWidths = pTxtRun->pWidths;
   int32_t iLength = pTxtRun->iLength - 1;
   IFX_Font* pFont = pTxtRun->pFont;
   uint32_t dwStyles = pTxtRun->dwStyles;
   CFX_RectF rtText(*pTxtRun->pRect);
   FX_BOOL bRTLPiece =
       (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel) != 0;
   FX_BOOL bArabicNumber =
       (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_ArabicNumber) != 0;
   FX_BOOL bArabicComma =
@@ skipping 359 matching lines @@
   return iCount;
 }
 int32_t CFX_TxtBreak::GetCharRects(const FX_TXTRUN* pTxtRun,
                                    CFX_RectFArray& rtArray,
                                    FX_BOOL bCharBBox) const {
   if (pTxtRun == NULL || pTxtRun->iLength < 1) {
     return 0;
   }
   IFX_TxtAccess* pAccess = pTxtRun->pAccess;
   void* pIdentity = pTxtRun->pIdentity;
-  const FX_WCHAR* pStr = pTxtRun->pStr;
+  const FX_WCHAR* pStr = pTxtRun->wsStr.c_str();
   int32_t* pWidths = pTxtRun->pWidths;
   int32_t iLength = pTxtRun->iLength;
   CFX_RectF rect(*pTxtRun->pRect);
   FX_BOOL bRTLPiece =
       (pTxtRun->dwCharStyles & FX_TXTCHARSTYLE_OddBidiLevel) != 0;
   FX_FLOAT fFontSize = pTxtRun->fFontSize;
   int32_t iFontSize = FXSYS_round(fFontSize * 20.0f);
   FX_FLOAT fScale = fFontSize / 1000.0f;
   IFX_Font* pFont = pTxtRun->pFont;
   if (pFont == NULL) {
@@ skipping 82 matching lines @@
         rtBBoxF.height = fHeight;
         rtBBoxF.top = std::max(rtBBoxF.top, 0.0f);
       }
       rtArray.SetAt(i, rtBBoxF);
       continue;
     }
     rtArray.SetAt(i, rect);
   }
   return iLength;
 }