Remove implicit cast from CFX_ByteString to (const char*).

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 619 matching lines @@
                                        FX_FLOAT origin_x,
                                        FX_FLOAT origin_y,
                                        CPDF_Font* pFont,
                                        FX_FLOAT font_size,
                                        const CFX_Matrix* pMatrix,
                                        const CFX_ByteString& str,
                                        FX_ARGB fill_argb,
                                        FX_ARGB stroke_argb,
                                        const CFX_GraphStateData* pGraphState,
                                        const CPDF_RenderOptions* pOptions) {
-  int nChars = pFont->CountChar(str, str.GetLength());
+  int nChars = pFont->CountChar(str.c_str(), str.GetLength());
   if (nChars == 0) {
     return;
   }
   uint32_t charcode;
   int offset = 0;
   uint32_t* pCharCodes;
   FX_FLOAT* pCharPos;
   if (nChars == 1) {
-    charcode = pFont->GetNextChar(str, str.GetLength(), offset);
+    charcode = pFont->GetNextChar(str.c_str(), str.GetLength(), offset);
     pCharCodes = (uint32_t*)(uintptr_t)charcode;
     pCharPos = NULL;
   } else {
     pCharCodes = FX_Alloc(uint32_t, nChars);
     pCharPos = FX_Alloc(FX_FLOAT, nChars - 1);
     FX_FLOAT cur_pos = 0;
     for (int i = 0; i < nChars; i++) {
-      pCharCodes[i] = pFont->GetNextChar(str, str.GetLength(), offset);
+      pCharCodes[i] = pFont->GetNextChar(str.c_str(), str.GetLength(), offset);
       if (i) {
         pCharPos[i - 1] = cur_pos;
       }
       cur_pos += pFont->GetCharWidthF(pCharCodes[i]) * font_size / 1000;
     }
   }
   CFX_Matrix matrix;
   if (pMatrix)
     matrix = *pMatrix;
 
@@ skipping 111 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);
   }
 }