Rename both As{Byte,Wide}StringC() helpers to AsStringC().

xfa/fxfa/app/xfa_fffield.cpp

Index: xfa/fxfa/app/xfa_fffield.cpp
diff --git a/xfa/fxfa/app/xfa_fffield.cpp b/xfa/fxfa/app/xfa_fffield.cpp
index dc1cebbf66cb4aab9fab4f2bbf68ba914c6452bb..e91dd96b95b7d8ff42bbe77f7c33b14b3f4766b8 100644
--- a/xfa/fxfa/app/xfa_fffield.cpp
+++ b/xfa/fxfa/app/xfa_fffield.cpp
@@ -731,9 +731,8 @@ int32_t CXFA_FFField::CalculateWidgetAcc(CXFA_WidgetAcc* pAcc) {
           wsMessage += wsWarning;
           CFX_WideString wsTitle;
           pAppProvider->LoadString(XFA_IDS_CalcOverride, wsTitle);
-          pAppProvider->MsgBox(wsMessage.AsWideStringC(),
-                               wsTitle.AsWideStringC(), XFA_MBICON_Warning,
-                               XFA_MB_OK);
+          pAppProvider->MsgBox(wsMessage.AsStringC(), wsTitle.AsStringC(),
+                               XFA_MBICON_Warning, XFA_MB_OK);
         }
       }
         return 0;
@@ -764,8 +763,8 @@ int32_t CXFA_FFField::CalculateWidgetAcc(CXFA_WidgetAcc* pAcc) {
           wsMessage += wsWarning;
           CFX_WideString wsTitle;
           pAppProvider->LoadString(XFA_IDS_CalcOverride, wsTitle);
-          if (pAppProvider->MsgBox(wsMessage.AsWideStringC(),
-                                   wsTitle.AsWideStringC(), XFA_MBICON_Warning,
+          if (pAppProvider->MsgBox(wsMessage.AsStringC(), wsTitle.AsStringC(),
+                                   XFA_MBICON_Warning,
                                    XFA_MB_YesNo) == XFA_IDYes) {
             pAcc->GetNode()->SetFlag(XFA_NODEFLAG_UserInteractive, TRUE, FALSE);
             return 1;