Get rid of FX_LPCSTR cast.

core/src/fpdfapi/fpdf_parser/fpdf_parser_utility.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_parser.h"
 extern const FX_LPCSTR _PDF_CharType =
     "WRRRRRRRRWWRWWRRRRRRRRRRRRRRRRRR"
     "WRRRRDRRDDRNRNNDNNNNNNNNNNRRDRDR"
@@ skipping 266 matching lines @@
             i += 2;
         } else {
             *pDest ++ = pSrc[i];
         }
     }
     result.ReleaseBuffer((FX_STRSIZE)(pDest - pDestStart));
     return result;
 }
 CFX_ByteString PDF_NameDecode(const CFX_ByteString& orig)
 {
-    if (FXSYS_memchr((FX_LPCSTR)orig, '#', orig.GetLength()) == NULL) {
+    if (FXSYS_memchr(orig.c_str(), '#', orig.GetLength()) == NULL) {
         return orig;
     }
     return PDF_NameDecode(CFX_ByteStringC(orig));
 }
 CFX_ByteString PDF_NameEncode(const CFX_ByteString& orig)
 {
-    FX_LPBYTE src_buf = (FX_LPBYTE)(FX_LPCSTR)orig;
+    FX_LPBYTE src_buf = (FX_LPBYTE)orig.c_str();
     int src_len = orig.GetLength();
     int dest_len = 0;
     int i;
     for (i = 0; i < src_len; i ++) {
         FX_BYTE ch = src_buf[i];
         if (ch >= 0x80 || _PDF_CharType[ch] == 'W' || ch == '#' ||
                 _PDF_CharType[ch] == 'D') {
             dest_len += 3;
         } else {
             dest_len ++;
@@ skipping 139 matching lines @@
         if (pFound) {
             return pFound;
         }
     }
     return NULL;
 }
 CPDF_Object* CPDF_NumberTree::LookupValue(int num)
 {
     return SearchNumberNode(m_pRoot, num);
 }