Add type cast definitions for CPDF_String.

fpdfsdk/src/formfiller/FFL_Utils.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 <algorithm>
 
 #include "../../include/formfiller/FormFiller.h"
 #include "../../include/formfiller/FFL_Utils.h"
@@ skipping 63 matching lines @@
       CPDF_Object* pDirectObj = pObj->GetDirect();
       TraceObject(pDirectObj);
     } break;
 
     case PDFOBJ_BOOLEAN:
       break;
     case PDFOBJ_NUMBER:
       // TRACE("%d\n",(int32_t)pObj);
       break;
     case PDFOBJ_STRING:
-      // TRACE(((CPDF_String*)pObj)->GetString() + "\n");
+      // TRACE(pObj->AsString()->GetString() + "\n");
       break;
     case PDFOBJ_NAME:
       // TRACE(((CPDF_Name*)pObj)->GetString() + "\n");
       break;
     case PDFOBJ_NULL:
     //  case PDFOBJ_KEYWORD:
     //  case PDFOBJ_EOF:
     default:
       break;
   }
   if (dwObjNum == 0)
     return FALSE;
 
   return TRUE;
 }