Cleanup CPDFXFA_Page.

xfa/fxfa/include/xfa_ffpageview.h

 // 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
 
 #ifndef XFA_FXFA_INCLUDE_XFA_FFPAGEVIEW_H_
 #define XFA_FXFA_INCLUDE_XFA_FFPAGEVIEW_H_
 
 #include "xfa/fxfa/parser/xfa_doclayout.h"
 
 class CXFA_FFWidget;
 class CXFA_FFDocView;
+
 class CXFA_FFPageView : public CXFA_ContainerLayoutItem {
  public:
   CXFA_FFPageView(CXFA_FFDocView* pDocView, CXFA_Node* pPageArea);
   ~CXFA_FFPageView() override;
 
-  CXFA_FFDocView* GetDocView();
-  int32_t GetPageViewIndex();
-  void GetPageViewRect(CFX_RectF& rtPage);
+  CXFA_FFDocView* GetDocView() const;
+  int32_t GetPageViewIndex() const;
+  void GetPageViewRect(CFX_RectF& rtPage) const;
   void GetDisplayMatrix(CFX_Matrix& mt,
                         const CFX_Rect& rtDisp,
-                        int32_t iRotate);
-  int32_t LoadPageView(IFX_Pause* pPause = NULL);
-  void UnloadPageView();
+                        int32_t iRotate) const;
   CXFA_FFWidget* GetWidgetByPos(FX_FLOAT fx, FX_FLOAT fy);
   IXFA_WidgetIterator* CreateWidgetIterator(
       uint32_t dwTraverseWay = XFA_TRAVERSEWAY_Form,
       uint32_t dwWidgetFilter = XFA_WIDGETFILTER_Visible |
                                 XFA_WIDGETFILTER_Viewable |
                                 XFA_WIDGETFILTER_AllType);
 
-  FX_BOOL IsPageViewLoaded();
+ protected:
+  CXFA_FFDocView* const m_pDocView;
+};
 
- protected:
-  CXFA_FFDocView* m_pDocView;
-  FX_BOOL m_bLoaded;
-};
 typedef CXFA_NodeIteratorTemplate<CXFA_LayoutItem,
                                   CXFA_TraverseStrategy_LayoutItem>
     CXFA_LayoutItemIterator;
 class CXFA_FFPageWidgetIterator : public IXFA_WidgetIterator {
  public:
   CXFA_FFPageWidgetIterator(CXFA_FFPageView* pPageView, uint32_t dwFilter);
   virtual ~CXFA_FFPageWidgetIterator();
 
   void Release() override { delete this; }
 
@@ skipping 54 matching lines @@
                       FX_BOOL bMarsterPage = FALSE);
 
   CXFA_WidgetArray m_TabOrderWidgetArray;
   CXFA_FFPageView* m_pPageView;
   uint32_t m_dwFilter;
   int32_t m_iCurWidget;
   FX_BOOL m_bIgnorerelevant;
 };
 
 #endif  // XFA_FXFA_INCLUDE_XFA_FFPAGEVIEW_H_