Split CPDFXFA_Document apart

xfa/fxfa/app/xfa_ffwidgetacc.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/app/xfa_ffwidgetacc.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 316 matching lines @@
     case XFA_Element::Execute:
       break;
     case XFA_Element::Script: {
       CXFA_Script script = event.GetScript();
       return ExecuteScript(script, pEventParam);
     } break;
     case XFA_Element::SignData:
       break;
     case XFA_Element::Submit: {
       CXFA_Submit submit = event.GetSubmit();
-      return GetDoc()->GetDocProvider()->SubmitData(GetDoc(), submit);
+      return GetDoc()->GetDocEnvironment()->SubmitData(GetDoc(), submit);
     }
     default:
       break;
   }
   return XFA_EVENTERROR_NotExist;
 }
 
 int32_t CXFA_WidgetAcc::ProcessCalculate() {
   if (GetElementType() == XFA_Element::Draw)
     return XFA_EVENTERROR_NotExist;
@@ skipping 1339 matching lines @@
     if (pIDNode) {
       pEmbAcc = static_cast<CXFA_WidgetAcc*>(pIDNode->GetWidgetData());
     }
     if (pEmbAcc) {
       pEmbAcc->GetValue(wsValue, XFA_VALUEPICTURE_Display);
       return TRUE;
     }
   }
   return FALSE;
 }