Make CFX_ByteString(const CFX_ByteStringC&) explicit.

core/fpdfapi/fpdf_render/fpdf_render_text.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_render/render_int.h"
 
 #include "core/fpdfapi/fpdf_font/cpdf_cidfont.h"
 #include "core/fpdfapi/fpdf_font/cpdf_type3char.h"
@@ skipping 39 matching lines @@
   m_SizeMap.clear();
 }
 CFX_GlyphBitmap* CPDF_Type3Cache::LoadGlyph(uint32_t charcode,
                                             const CFX_Matrix* pMatrix,
                                             FX_FLOAT retinaScaleX,
                                             FX_FLOAT retinaScaleY) {
   CPDF_UniqueKeyGen keygen;
   keygen.Generate(
       4, FXSYS_round(pMatrix->a * 10000), FXSYS_round(pMatrix->b * 10000),
       FXSYS_round(pMatrix->c * 10000), FXSYS_round(pMatrix->d * 10000));
-  CFX_ByteStringC FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen);
+  CFX_ByteString FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen);
   CPDF_Type3Glyphs* pSizeCache;
   auto it = m_SizeMap.find(FaceGlyphsKey);
   if (it == m_SizeMap.end()) {
     pSizeCache = new CPDF_Type3Glyphs;
     m_SizeMap[FaceGlyphsKey] = pSizeCache;
   } else {
     pSizeCache = it->second;
   }
   auto it2 = pSizeCache->m_GlyphMap.find(charcode);
   if (it2 != pSizeCache->m_GlyphMap.end())
@@ skipping 706 matching lines @@
     matrix.Concat(font_size, 0, 0, font_size, charpos.m_OriginX,
                   charpos.m_OriginY);
     path.m_Path.New()->Append(pPath, &matrix);
     path.m_Matrix = *pTextMatrix;
     path.m_bStroke = bStroke;
     path.m_FillType = bFill ? FXFILL_WINDING : 0;
     path.CalcBoundingBox();
     ProcessPath(&path, pObj2Device);
   }
 }