Cleanup CPDFXFA_Page.

xfa/fxfa/parser/xfa_doclayout.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_PARSER_XFA_DOCLAYOUT_H_
 #define XFA_FXFA_PARSER_XFA_DOCLAYOUT_H_
 
 #include "xfa/fxfa/parser/xfa_document.h"
@@ skipping 39 matching lines @@
 
   FX_BOOL m_bIsContentLayoutItem;
 };
 
 class CXFA_ContainerLayoutItem : public CXFA_LayoutItem {
  public:
   CXFA_ContainerLayoutItem(CXFA_Node* pNode);
 
   CXFA_LayoutProcessor* GetLayout() const;
   int32_t GetPageIndex() const;
-  void GetPageSize(CFX_SizeF& size);
+  void GetPageSize(CFX_SizeF& size) const;
   CXFA_Node* GetMasterPage() const;
 
   CXFA_Node* m_pOldSubform;
 };
 
 #define XFA_WIDGETSTATUS_Access 0x80000000
 #define XFA_WIDGETSTATUS_Disabled 0x40000000
 #define XFA_WIDGETSTATUS_RectCached 0x20000000
 #define XFA_WIDGETSTATUS_ButtonDown 0x10000000
 #define XFA_WIDGETSTATUS_Highlight 0x08000000
@@ skipping 33 matching lines @@
   }
   static inline CXFA_LayoutItem* GetNextSibling(CXFA_LayoutItem* pLayoutItem) {
     return pLayoutItem->m_pNextSibling;
   }
   static inline CXFA_LayoutItem* GetParent(CXFA_LayoutItem* pLayoutItem) {
     return pLayoutItem->m_pParent;
   }
 };
 
 #endif  // XFA_FXFA_PARSER_XFA_DOCLAYOUT_H_