Rename CPDFXFA_Document to CPDFXFA_Context

fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.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_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_
 #define FPDFSDK_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_
 
 #include "public/fpdfview.h"
 #include "xfa/fxfa/fxfa.h"
 
-class CPDFXFA_Document;
+class CPDFXFA_Context;
 class IJS_Context;
 
 class CPDFXFA_DocEnvironment : public IXFA_DocEnvironment {
  public:
-  CPDFXFA_DocEnvironment(CPDFXFA_Document*);
+  CPDFXFA_DocEnvironment(CPDFXFA_Context*);
   ~CPDFXFA_DocEnvironment() override;
 
   // IXFA_DocEnvironment
   void SetChangeMark(CXFA_FFDoc* hDoc) override;
   // used in dynamic xfa, dwFlags refer to XFA_INVALIDATE_XXX macros.
   void InvalidateRect(CXFA_FFPageView* pPageView,
                       const CFX_RectF& rt,
                       uint32_t dwFlags) override;
   // show or hide caret
   void DisplayCaret(CXFA_FFWidget* hWidget,
@@ skipping 69 matching lines @@
                      CFX_WideString& csCCAddress,
                      CFX_WideString& csBCCAddress,
                      CFX_WideString& csSubject,
                      CFX_WideString& csMsg);
   FX_BOOL ExportSubmitFile(FPDF_FILEHANDLER* ppFileHandler,
                            int fileType,
                            FPDF_DWORD encodeType,
                            FPDF_DWORD flag);
   void ToXFAContentFlags(CFX_WideString csSrcContent, FPDF_DWORD& flag);
 
-  CPDFXFA_Document* const m_pDocument;  // Not owned;
+  CPDFXFA_Context* const m_pContext;  // Not owned;
   IJS_Context* m_pJSContext;
 };
 
 #endif  // FPDFSDK_FPDFXFA_CPDFXFA_DOCENVIRONMENT_H_