Reduce usage of operator LPCWSTR from CFX_WideString().

fpdfsdk/src/fsdk_baseform.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 "../../third_party/base/nonstd_unique_ptr.h"
 #include "../include/fsdk_define.h"
 #include "../include/fsdk_mgr.h"
 #include "../include/fsdk_baseannot.h"
@@ skipping 2511 matching lines @@
 
         CPDF_FormField* pFormField = (CPDF_FormField*)pField;
         int nType = pFormField->GetFieldType();
 
         if (nType == FIELDTYPE_COMBOBOX || nType == FIELDTYPE_TEXTFIELD)
         {
                 this->OnCalculate(pFormField);
                 FX_BOOL bFormated = FALSE;
                 CFX_WideString sValue = this->OnFormat(pFormField, 0, bFormated);
                 if (bFormated)
-                        this->ResetFieldAppearance(pFormField, sValue, TRUE);
+                        this->ResetFieldAppearance(pFormField, sValue.c_str(), TRUE);
                 else
                         this->ResetFieldAppearance(pFormField, NULL, TRUE);
                 this->UpdateField(pFormField);
         }
 
         return 0;
 }
 
 int     CPDFSDK_InterForm::BeforeSelectionChange(const CPDF_FormField* pField, CFX_WideString& csValue)
 {
@@ skipping 453 matching lines @@
 
         CPDF_Annot* pPDFAnnot = pAnnot->GetPDFAnnot();
         ASSERT(pPDFAnnot != NULL);
 
         CPDF_Rect rcAnnot;
         pPDFAnnot->GetRect(rcAnnot);
 
         return rcAnnot;
 }