Make down-conversion explicit from CFX_Widetring to CFX_WideStringC.

xfa/fxbarcode/cbc_code39.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
 /*
  * Copyright 2011 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ skipping 50 matching lines @@
   CFX_WideString filtercontents =
       ((CBC_OnedCode39Writer*)m_pBCWriter)->FilterContents(contents);
   CFX_WideString renderContents =
       ((CBC_OnedCode39Writer*)m_pBCWriter)->RenderTextContents(contents);
   m_renderContents = renderContents;
   CFX_ByteString byteString = filtercontents.UTF8Encode();
   uint8_t* data = static_cast<CBC_OnedCode39Writer*>(m_pBCWriter)
                       ->Encode(byteString, format, outWidth, outHeight, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   ((CBC_OneDimWriter*)m_pBCWriter)
-      ->RenderResult(renderContents, data, outWidth, isDevice, e);
+      ->RenderResult(renderContents.AsWideStringC(), data, outWidth, isDevice,
+                     e);
   FX_Free(data);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 FX_BOOL CBC_Code39::RenderDevice(CFX_RenderDevice* device,
                                  const CFX_Matrix* matirx,
                                  int32_t& e) {
-  CFX_WideString renderCon = ((CBC_OnedCode39Writer*)m_pBCWriter)
-                                 ->encodedContents(m_renderContents, e);
+  CFX_WideString renderCon =
+      ((CBC_OnedCode39Writer*)m_pBCWriter)
+          ->encodedContents(m_renderContents.AsWideStringC(), e);
   ((CBC_OneDimWriter*)m_pBCWriter)
-      ->RenderDeviceResult(device, matirx, renderCon, e);
+      ->RenderDeviceResult(device, matirx, renderCon.AsWideStringC(), e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 FX_BOOL CBC_Code39::RenderBitmap(CFX_DIBitmap*& pOutBitmap, int32_t& e) {
-  CFX_WideString renderCon = ((CBC_OnedCode39Writer*)m_pBCWriter)
-                                 ->encodedContents(m_renderContents, e);
+  CFX_WideString renderCon =
+      ((CBC_OnedCode39Writer*)m_pBCWriter)
+          ->encodedContents(m_renderContents.AsWideStringC(), e);
   ((CBC_OneDimWriter*)m_pBCWriter)
-      ->RenderBitmapResult(pOutBitmap, renderCon, e);
+      ->RenderBitmapResult(pOutBitmap, renderCon.AsWideStringC(), e);
   BC_EXCEPTION_CHECK_ReturnValue(e, FALSE);
   return TRUE;
 }
 
 CFX_WideString CBC_Code39::Decode(uint8_t* buf,
                                   int32_t width,
                                   int32_t hight,
                                   int32_t& e) {
   CFX_WideString str;
   return str;
@@ skipping 12 matching lines @@
   if (m_pBCWriter)
     return ((CBC_OnedCode39Writer*)m_pBCWriter)->SetTextLocation(location);
   return FALSE;
 }
 
 FX_BOOL CBC_Code39::SetWideNarrowRatio(int32_t ratio) {
   if (m_pBCWriter)
     return ((CBC_OnedCode39Writer*)m_pBCWriter)->SetWideNarrowRatio(ratio);
   return FALSE;
 }