Merge to XFA: Don't bother passing -1 as the length to the CFX_ByteString ctor.

core/src/fpdfapi/fpdf_font/fpdf_font_charset.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_page.h"
 #include "../../../include/fpdfapi/fpdf_parser.h"
 #include "../../../include/fpdfapi/fpdf_resource.h"
 #include "../../../include/fxge/fx_freetype.h"
@@ skipping 1760 matching lines @@
 }
 FX_DWORD PDF_PredefinedCharCodeFromUnicode(int encoding, FX_WCHAR unicode) {
   return PDF_FindCode(PDF_UnicodesForPredefinedCharSet(encoding), unicode);
 }
 FX_WCHAR PDF_UnicodeFromAdobeName(const FX_CHAR* name) {
   return (FX_WCHAR)(FXFT_unicode_from_adobe_name(name) & 0x7FFFFFFF);
 }
 CFX_ByteString PDF_AdobeNameFromUnicode(FX_WCHAR unicode) {
   char glyph_name[64];
   FXFT_adobe_name_from_unicode(glyph_name, unicode);
-  return CFX_ByteString(glyph_name, -1);
+  return CFX_ByteString(glyph_name);
 }