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

xfa/src/fxbarcode/BC_UtilCodingConvert.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 "barcode.h"
 #include "BC_UtilCodingConvert.h"
+
 CBC_UtilCodingConvert::CBC_UtilCodingConvert() {}
+
 CBC_UtilCodingConvert::~CBC_UtilCodingConvert() {}
+
 void CBC_UtilCodingConvert::UnicodeToLocale(const CFX_WideString& src,
                                             CFX_ByteString& dst) {
-  dst.ConvertFrom(src);
+  dst = CFX_ByteString::FromUnicode(src);
 }
+
 void CBC_UtilCodingConvert::LocaleToUtf8(const CFX_ByteString& src,
                                          CFX_ByteString& dst) {
-  CFX_WideString unicode = CFX_WideString::FromLocal(src, src.GetLength());
+  CFX_WideString unicode = CFX_WideString::FromLocal(src);
   dst = unicode.UTF8Encode();
 }
+
 void CBC_UtilCodingConvert::LocaleToUtf8(const CFX_ByteString& src,
                                          CFX_ByteArray& dst) {
-  CFX_WideString unicode = CFX_WideString::FromLocal(src, src.GetLength());
+  CFX_WideString unicode = CFX_WideString::FromLocal(src);
   CFX_ByteString utf8 = unicode.UTF8Encode();
   for (int32_t i = 0; i < utf8.GetLength(); i++) {
     dst.Add(utf8[i]);
   }
 }
+
 void CBC_UtilCodingConvert::Utf8ToLocale(const CFX_ByteArray& src,
                                          CFX_ByteString& dst) {
   CFX_ByteString utf8;
   for (int32_t i = 0; i < src.GetSize(); i++) {
     utf8 += src[i];
   }
   CFX_WideString unicode = CFX_WideString::FromUTF8(utf8, utf8.GetLength());
-  dst.ConvertFrom(unicode);
+  dst = CFX_ByteString::FromUnicode(unicode);
 }
+
 void CBC_UtilCodingConvert::Utf8ToLocale(const uint8_t* src,
                                          int32_t count,
                                          CFX_ByteString& dst) {
   CFX_WideString unicode = CFX_WideString::FromUTF8((const char*)src, count);
-  dst.ConvertFrom(unicode);
+  dst = CFX_ByteString::FromUnicode(unicode);
 }
+
 void CBC_UtilCodingConvert::UnicodeToUTF8(const CFX_WideString& src,
                                           CFX_ByteString& dst) {
   dst = src.UTF8Encode();
 }