Move xfa/src up to xfa/.

xfa/src/fxfa/fm2js/xfa_error.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/src/fxfa/fm2js/xfa_error.h"
-
-static const FX_WCHAR* const gs_lpStrErrorMsgInfo[] = {
-    L"unsupported char '%c'",         L"bad suffix on number",
-    L"invalidate char '%c'",          L"expected identifier instead of '%s'",
-    L"expected '%s' instead of '%s'", L"expected 'endif' instead of '%s'",
-    L"unexpected expression '%s'",    L"expected operator '%s' instead of '%s'",
-    L"expected non-empty expression",
-};
-
-const FX_WCHAR* XFA_FM_ErrorMsg(XFA_FM_ERRMSG msg) {
-  if (msg < FMERR_MAXIMUM)
-    return gs_lpStrErrorMsgInfo[msg];
-  return L"";
-}