Convert Field to use CPDFSDK_FormFillEnvironment

fpdfsdk/javascript/Document.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/javascript/Document.h"
 
 #include <utility>
 #include <vector>
@@ skipping 869 matching lines @@
     if (!m_pDocument->GetPermissions(FPDFPERM_MODIFY)) {
       sError = JSGetStringFromID(IDS_STRING_JSNOPERMISSION);
       return FALSE;
     }
     vp >> m_bDelay;
     if (m_bDelay) {
       m_DelayData.clear();
     } else {
       std::list<std::unique_ptr<CJS_DelayData>> DelayDataToProcess;
       DelayDataToProcess.swap(m_DelayData);
-      for (const auto& pData : DelayDataToProcess)
-        Field::DoDelay(m_pDocument.Get(), pData.get());
+      for (const auto& pData : DelayDataToProcess) {
+        if (m_pDocument.Get())
+          Field::DoDelay(m_pDocument->GetEnv(), pData.get());
+      }
     }
   }
   return TRUE;
 }
 
 FX_BOOL Document::keywords(IJS_Context* cc,
                            CJS_PropValue& vp,
                            CFX_WideString& sError) {
   return getPropertyInternal(cc, vp, "Keywords", sError);
 }
@@ skipping 812 matching lines @@
   auto iter = m_DelayData.begin();
   while (iter != m_DelayData.end()) {
     auto old = iter++;
     if ((*old)->sFieldName == sFieldName &&
         (*old)->nControlIndex == nControlIndex) {
       DelayDataForFieldAndControlIndex.push_back(std::move(*old));
       m_DelayData.erase(old);
     }
   }
 
-  for (const auto& pData : DelayDataForFieldAndControlIndex)
-    Field::DoDelay(m_pDocument.Get(), pData.get());
+  for (const auto& pData : DelayDataForFieldAndControlIndex) {
+    if (m_pDocument.Get())
+      Field::DoDelay(m_pDocument->GetEnv(), pData.get());
+  }
 }
 
 CJS_Document* Document::GetCJSDoc() const {
   return static_cast<CJS_Document*>(m_pJSObject);
 }