Make down-conversion explicit from CFX_Widetring to CFX_WideStringC.

xfa/fxfa/parser/xfa_script_layoutpseudomodel.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/parser/xfa_script_layoutpseudomodel.h"
 
 #include "xfa/fxfa/app/xfa_ffnotify.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ skipping 99 matching lines @@
     case XFA_LAYOUTMODEL_W:
       measure.Set(rtRect.width, XFA_UNIT_Pt);
       break;
     case XFA_LAYOUTMODEL_X:
       measure.Set(rtRect.left, XFA_UNIT_Pt);
       break;
     case XFA_LAYOUTMODEL_Y:
       measure.Set(rtRect.top, XFA_UNIT_Pt);
       break;
   }
-  XFA_UNIT unit = measure.GetUnit(wsUnit);
+  XFA_UNIT unit = measure.GetUnit(wsUnit.AsWideStringC());
   FX_FLOAT fValue = measure.ToUnit(unit);
   fValue = FXSYS_round(fValue * 1000) / 1000.0f;
   if (hValue) {
     FXJSE_Value_SetFloat(hValue, fValue);
   }
 }
 void CScript_LayoutPseudoModel::Script_LayoutPseudoModel_H(
     CFXJSE_Arguments* pArguments) {
   Script_LayoutPseudoModel_HWXY(pArguments, XFA_LAYOUTMODEL_H);
 }
@@ skipping 418 matching lines @@
   CXFA_LayoutItem* pLayoutItem = pDocLayout->GetLayoutItem(pNode);
   if (!pLayoutItem) {
     FXJSE_Value_SetInteger(hValue, -1);
     return;
   }
   iPage = pLayoutItem->GetFirst()->GetPage()->GetPageIndex();
   if (hValue) {
     FXJSE_Value_SetInteger(hValue, bAbsPage ? iPage : iPage + 1);
   }
 }