Inflict PDF_ENABLE_XFA ifdefs on XFA fpdfsdk/

fpdfsdk/src/formfiller/FFL_TextField.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 "fpdfsdk/include/formfiller/FFL_CBA_Fontmap.h"
 #include "fpdfsdk/include/formfiller/FFL_TextField.h"
 
 /* ------------------------------- CFFL_TextField
@@ skipping 250 matching lines @@
     RestoreState(pPageView);
     pRet = GetPDFWindow(pPageView, FALSE);
   } else
     pRet = GetPDFWindow(pPageView, TRUE);
 
   m_pWidget->UpdateField();
 
   return pRet;
 }
 
+#ifdef PDF_ENABLE_XFA
 FX_BOOL CFFL_TextField::IsFieldFull(CPDFSDK_PageView* pPageView) {
   if (CPWL_Edit* pWnd = (CPWL_Edit*)GetPDFWindow(pPageView, FALSE)) {
     return pWnd->IsTextFull();
   }
 
   return FALSE;
 }
 
+#endif
 void CFFL_TextField::OnSetFocus(CPWL_Wnd* pWnd) {
   ASSERT(m_pApp != NULL);
 
   ASSERT(pWnd != NULL);
 
   if (pWnd->GetClassName() == PWL_CLASSNAME_EDIT) {
     CPWL_Edit* pEdit = (CPWL_Edit*)pWnd;
     pEdit->SetCharSet(134);
     pEdit->SetCodePage(936);
 
     pEdit->SetReadyToInput();
     CFX_WideString wsText = pEdit->GetText();
     int nCharacters = wsText.GetLength();
     CFX_ByteString bsUTFText = wsText.UTF16LE_Encode();
     unsigned short* pBuffer = (unsigned short*)bsUTFText.c_str();
     m_pApp->FFI_OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer,
                                      nCharacters, TRUE);
 
     pEdit->SetEditNotify(this);
   }
 }
 
 void CFFL_TextField::OnKillFocus(CPWL_Wnd* pWnd) {}
 
 void CFFL_TextField::OnAddUndo(CPWL_Edit* pEdit) {}