Make CFX_ByteString(const CFX_ByteStringC&) explicit.

core/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 "core/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
@@ skipping 63 matching lines @@
   for (int32_t offset = 0; offset <= 1024; ++offset) {
     if (!pFile->ReadBlock(buf, offset, kBufSize))
       return -1;
 
     if (memcmp(buf, "%PDF", 4) == 0)
       return offset;
   }
   return -1;
 }
 
-int32_t GetDirectInteger(CPDF_Dictionary* pDict, const CFX_ByteStringC& key) {
+int32_t GetDirectInteger(CPDF_Dictionary* pDict, const CFX_ByteString& key) {
   CPDF_Number* pObj = ToNumber(pDict->GetObjectBy(key));
   return pObj ? pObj->GetInteger() : 0;
 }
 
 CFX_ByteString PDF_NameDecode(const CFX_ByteStringC& bstr) {
   if (bstr.Find('#') == -1)
-    return bstr;
+    return CFX_ByteString(bstr);
 
   int size = bstr.GetLength();
   CFX_ByteString result;
   FX_CHAR* pDestStart = result.GetBuffer(size);
   FX_CHAR* pDest = pDestStart;
   for (int i = 0; i < size; i++) {
     if (bstr[i] == '#' && i < size - 2) {
       *pDest++ =
           FXSYS_toHexDigit(bstr[i + 1]) * 16 + FXSYS_toHexDigit(bstr[i + 2]);
       i += 2;
@@ skipping 110 matching lines @@
       buf.AppendBlock(acc.GetData(), acc.GetSize());
       buf << "\r\nendstream";
       break;
     }
     default:
       ASSERT(FALSE);
       break;
   }
   return buf;
 }