Split CPDFXFA_Document apart

xfa/fxfa/app/xfa_ffnotify.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_ffnotify.h"
 
 #include "fxjs/include/cfxjse_value.h"
 #include "xfa/fxfa/app/xfa_ffbarcode.h"
@@ skipping 220 matching lines @@
       static_cast<CXFA_WidgetAcc*>(pNode->GetWidgetData());
   if (!pWidgetAcc) {
     return;
   }
   pDocView->AddCalculateWidgetAcc(pWidgetAcc);
   pDocView->AddValidateWidget(pWidgetAcc);
 }
 CXFA_FFDoc* CXFA_FFNotify::GetHDOC() {
   return m_pDoc;
 }
-IXFA_DocProvider* CXFA_FFNotify::GetDocProvider() {
+IXFA_DocEnvironment* CXFA_FFNotify::GetDocProvider() {
   return m_pDoc->GetDocProvider();
 }
 IXFA_AppProvider* CXFA_FFNotify::GetAppProvider() {
   return m_pDoc->GetApp()->GetAppProvider();
 }
 CXFA_FFWidgetHandler* CXFA_FFNotify::GetWidgetHandler() {
   CXFA_FFDocView* pDocView = m_pDoc->GetDocView();
   return pDocView ? pDocView->GetWidgetHandler() : nullptr;
 }
 CXFA_FFWidget* CXFA_FFNotify::GetHWidget(CXFA_LayoutItem* pLayoutItem) {
@@ skipping 252 matching lines @@
     return;
 
   CXFA_FFWidget* pWidget = XFA_GetWidgetFromLayoutItem(pSender);
   if (!pWidget)
     return;
 
   pDocView->DeleteLayoutItem(pWidget);
   m_pDoc->GetDocProvider()->WidgetPreRemove(pWidget, pWidget->GetDataAcc());
   pWidget->AddInvalidateRect(nullptr);
 }