Reduce usage of operator LPCWSTR from CFX_WideString().

core/src/fpdftext/fpdf_text_int.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 "../../include/fpdfapi/fpdf_resource.h"
 #include "../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../include/fpdftext/fpdf_text.h"
 #include "../../include/fpdfapi/fpdf_page.h"
@@ skipping 2361 matching lines @@
                     nResultPos = nStartPos + 1;
                     break;
                 }
                 iWord = -1;
             } else if(iWord == 0) {
                 bSpaceStart = TRUE;
             }
             continue;
         }
         int endIndex;
-        nResultPos = m_strText.Find(csWord, nStartPos);
+        nResultPos = m_strText.Find(csWord.c_str(), nStartPos);
         if (nResultPos == -1) {
             m_IsFind = FALSE;
             return m_IsFind;
         }
         endIndex = nResultPos + csWord.GetLength() - 1;
         if(iWord == 0) {
             m_resStart = nResultPos;
         }
         FX_BOOL bMatch = TRUE;
         if(iWord != 0 && !bSpaceStart) {
@@ skipping 96 matching lines @@
     return m_IsFind;
 }
 void CPDF_TextPageFind::ExtractFindWhat(const CFX_WideString& findwhat)
 {
     if(findwhat.IsEmpty()) {
         return ;
     }
     int index = 0;
     while(1) {
         CFX_WideString csWord = TEXT_EMPTY;
-        int ret = ExtractSubString(csWord, findwhat, index, TEXT_BLANK_CHAR);
+        int ret = ExtractSubString(csWord, findwhat.c_str(), index, TEXT_BLANK_CHAR);
         if(csWord.IsEmpty()) {
             if(ret) {
                 m_csFindWhatArray.Add(CFX_WideString(L""));
                 index++;
                 continue;
             } else {
                 break;
             }
         }
         int pos = 0;
@@ skipping 333 matching lines @@
     if (!m_IsParserd || index < 0 || index >= m_LinkList.GetSize()) {
         return;
     }
     CPDF_LinkExt* link = NULL;
     link = m_LinkList.GetAt(index);
     if (!link) {
         return ;
     }
     m_pTextPage->GetRectArray(link->m_Start, link->m_Count, rects);
 }