Make down-conversion explicit from CFX_ByteString to CFX_ByteStringC.

core/fpdfapi/fpdf_parser/cpdf_name.cpp

 // Copyright 2016 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/fpdfapi/fpdf_parser/include/cpdf_name.h"
 
 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
 
@@ skipping 11 matching lines @@
 
 CPDF_Object* CPDF_Name::Clone(FX_BOOL bDirect) const {
   return new CPDF_Name(m_Name);
 }
 
 CFX_ByteString CPDF_Name::GetString() const {
   return m_Name;
 }
 
 CFX_ByteStringC CPDF_Name::GetConstString() const {
-  return CFX_ByteStringC(m_Name);
+  return m_Name.AsByteStringC();
 }
 
 void CPDF_Name::SetString(const CFX_ByteString& str) {
   m_Name = str;
 }
 
 bool CPDF_Name::IsName() const {
   return true;
 }
 
 CPDF_Name* CPDF_Name::AsName() {
   return this;
 }
 
 const CPDF_Name* CPDF_Name::AsName() const {
   return this;
 }
 
 CFX_WideString CPDF_Name::GetUnicodeText() const {
   return PDF_DecodeText(m_Name);
 }