Remove CFX_{Byte,Wide}String::ConvertFrom().

core/src/fxcrt/fx_extension.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 "core/include/fxcrt/fx_basic.h"
 #include "core/include/fxcrt/fx_ext.h"
 #include "core/src/fxcrt/extension.h"
 
@@ skipping 115 matching lines @@
 FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x) {
   return FXSYS_log(x) / FXSYS_log(b);
 }
 FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr,
                       int32_t iLength,
                       int32_t* pUsedLen) {
   FXSYS_assert(pcsStr);
   if (iLength < 0) {
     iLength = (int32_t)FXSYS_strlen(pcsStr);
   }
-  CFX_WideString ws = CFX_WideString::FromLocal(pcsStr, iLength);
+  CFX_WideString ws =
+      CFX_WideString::FromLocal(CFX_ByteString(pcsStr, iLength));
   return FXSYS_wcstof(ws.c_str(), iLength, pUsedLen);
 }
 FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr,
                       int32_t iLength,
                       int32_t* pUsedLen) {
   FXSYS_assert(pwsStr);
   if (iLength < 0) {
     iLength = (int32_t)FXSYS_wcslen(pwsStr);
   }
   if (iLength == 0) {
@@ skipping 239 matching lines @@
     b = ((const uint8_t*)pGUID)[i];
     *pBuf++ = gs_FX_pHexChars[b >> 4];
     *pBuf++ = gs_FX_pHexChars[b & 0x0F];
     if (bSeparator && (i == 3 || i == 5 || i == 7 || i == 9)) {
       *pBuf++ = L'-';
     }
   }
   bsStr.ReleaseBuffer(bSeparator ? 36 : 32);
 }
 #endif  // PDF_ENABLE_XFA