Convert fpdfformfill to use CPDFSDK_FormFillEnvironment

fpdfsdk/cpdfsdk_document.cpp

 // Copyright 2016 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/cpdfsdk_document.h"
 
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_dictionary.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "core/fpdfapi/parser/cpdf_object.h"
 #include "core/fpdfdoc/cpdf_action.h"
 #include "core/fpdfdoc/cpdf_docjsactions.h"
 #include "core/fpdfdoc/cpdf_occontext.h"
 #include "fpdfsdk/cpdfsdk_annot.h"
 #include "fpdfsdk/cpdfsdk_annothandlermgr.h"
 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
 #include "fpdfsdk/cpdfsdk_interform.h"
 #include "fpdfsdk/cpdfsdk_pageview.h"
 #include "fpdfsdk/cpdfsdk_widget.h"
 #include "fpdfsdk/fsdk_actionhandler.h"
 #include "third_party/base/ptr_util.h"
 
-// static
-CPDFSDK_Document* CPDFSDK_Document::FromFPDFFormHandle(
-    FPDF_FORMHANDLE hHandle) {
-  CPDFSDK_FormFillEnvironment* pEnv =
-      static_cast<CPDFSDK_FormFillEnvironment*>(hHandle);
-  return pEnv ? pEnv->GetSDKDocument() : nullptr;
-}
-
 CPDFSDK_Document::CPDFSDK_Document(UnderlyingDocumentType* pDoc,
                                    CPDFSDK_FormFillEnvironment* pEnv)
     : m_pDoc(pDoc),
       m_pEnv(pEnv),
       m_bChangeMask(FALSE),
       m_bBeingDestroyed(FALSE) {}
 
 CPDFSDK_Document::~CPDFSDK_Document() {
   m_bBeingDestroyed = TRUE;
 
@@ skipping 203 matching lines @@
   return GetPDFDocument()->GetUserPermissions() & nFlag;
 }
 
 IJS_Runtime* CPDFSDK_Document::GetJsRuntime() {
   return m_pEnv->GetJSRuntime();
 }
 
 CFX_WideString CPDFSDK_Document::GetPath() {
   return m_pEnv->JS_docGetFilePath();
 }