Avoid narrowing of strings in FWL SetEditText methods.

xfa/fxfa/app/xfa_ffdocview.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 "xfa/fxfa/include/xfa_ffdocview.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fxfa/app/xfa_ffbarcode.h"
@@ skipping 238 matching lines @@
   if (bChanged) {
     m_pDoc->GetDocProvider()->SetChangeMark(m_pDoc);
   }
 }
 int32_t CXFA_FFDocView::ProcessWidgetEvent(CXFA_EventParam* pParam,
                                            CXFA_WidgetAcc* pWidgetAcc) {
   if (pParam == NULL) {
     return XFA_EVENTERROR_Error;
   }
   if (pParam->m_eType == XFA_EVENT_Validate) {
-    CFX_WideString wsValidateStr = FX_WSTRC(L"preSubmit");
+    CFX_WideString wsValidateStr(L"preSubmit");
     CXFA_Node* pConfigItem =
         ToNode(m_pDoc->GetXFADoc()->GetXFAObject(XFA_HASHCODE_Config));
     if (pConfigItem) {
       CXFA_Node* pValidateNode = NULL;
       CXFA_Node* pAcrobatNode = pConfigItem->GetChild(0, XFA_ELEMENT_Acrobat);
       pValidateNode =
           pAcrobatNode ? pAcrobatNode->GetChild(0, XFA_ELEMENT_Validate) : NULL;
       if (!pValidateNode) {
         CXFA_Node* pPresentNode = pConfigItem->GetChild(0, XFA_ELEMENT_Present);
         pValidateNode = pPresentNode
@@ skipping 636 matching lines @@
 CXFA_WidgetAcc* CXFA_WidgetAccIterator::GetCurrentWidgetAcc() {
   return NULL;
 }
 FX_BOOL CXFA_WidgetAccIterator::SetCurrentWidgetAcc(CXFA_WidgetAcc* hWidget) {
   return FALSE;
 }
 void CXFA_WidgetAccIterator::SkipTree() {
   m_ContentIterator.SkipChildrenAndMoveToNext();
   m_pCurWidgetAcc = NULL;
 }