Start proxying CPDFSDK_Document methods through CPDFSDK_FormFillEnvironment

fpdfsdk/cpdfsdk_pageview.h

 // 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
 
 #ifndef FPDFSDK_CPDFSDK_PAGEVIEW_H_
 #define FPDFSDK_CPDFSDK_PAGEVIEW_H_
 
 #include <memory>
@@ skipping 40 matching lines @@
 #ifdef PDF_ENABLE_XFA
   FX_BOOL DeleteAnnot(CPDFSDK_Annot* pAnnot);
   CPDFSDK_Annot* AddAnnot(CXFA_FFWidget* pPDFAnnot);
   CPDFSDK_Annot* GetAnnotByXFAWidget(CXFA_FFWidget* hWidget);
 
   CPDFXFA_Page* GetPDFXFAPage() { return m_page; }
 #endif  // PDF_ENABLE_XFA
 
   CPDF_Page* GetPDFPage() const;
   CPDF_Document* GetPDFDocument();
-  CPDFSDK_Document* GetSDKDocument() { return m_pSDKDoc; }
+  CPDFSDK_FormFillEnvironment* GetFormFillEnv() { return m_pSDKDoc->GetEnv(); }
+
   FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, uint32_t nFlag);
   FX_BOOL OnLButtonUp(const CFX_FloatPoint& point, uint32_t nFlag);
 #ifdef PDF_ENABLE_XFA
   FX_BOOL OnRButtonDown(const CFX_FloatPoint& point, uint32_t nFlag);
   FX_BOOL OnRButtonUp(const CFX_FloatPoint& point, uint32_t nFlag);
 #endif  // PDF_ENABLE_XFA
   FX_BOOL OnChar(int nChar, uint32_t nFlag);
   FX_BOOL OnKeyDown(int nKeyCode, int nFlag);
   FX_BOOL OnKeyUp(int nKeyCode, int nFlag);
 
@@ skipping 37 matching lines @@
 #endif  // PDF_ENABLE_XFA
   FX_BOOL m_bEnterWidget;
   FX_BOOL m_bExitWidget;
   FX_BOOL m_bOnWidget;
   FX_BOOL m_bValid;
   FX_BOOL m_bLocked;
   bool m_bBeingDestroyed;
 };
 
 #endif  // FPDFSDK_CPDFSDK_PAGEVIEW_H_