Disentangle filter content recording state from FilterData

Source/core/layout/svg/LayoutSVGResourceFilter.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 10 matching lines @@
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef LayoutSVGResourceFilter_h
 #define LayoutSVGResourceFilter_h
 
 #include "core/layout/svg/LayoutSVGResourceContainer.h"
 #include "core/svg/SVGFilterElement.h"
 #include "core/svg/graphics/filters/SVGFilter.h"
 #include "core/svg/graphics/filters/SVGFilterBuilder.h"
-#include "platform/graphics/GraphicsContext.h"
-#include "platform/graphics/paint/DisplayItemList.h"
 
 namespace blink {
 
 class FilterData final : public NoBaseWillBeGarbageCollectedFinalized<FilterData> {
     WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(FilterData);
 public:
     /*
      * The state transitions should follow the following:
      * Initial -> RecordingContent -> ReadyToPaint -> PaintingFilter -> ReadyToPaint
      *               |     ^                              |     ^
@@ skipping 13 matching lines @@
     {
         return adoptPtrWillBeNoop(new FilterData());
     }
 
     void dispose();
 
     DECLARE_TRACE();
 
     RefPtrWillBeMember<SVGFilter> filter;
     RefPtrWillBeMember<SVGFilterBuilder> builder;
-    OwnPtr<DisplayItemList> m_displayItemList;
-    OwnPtr<GraphicsContext> m_context;
     FilterDataState m_state;
 
 private:
     FilterData() : m_state(Initial) { }
 };
 
 class LayoutSVGResourceFilter final : public LayoutSVGResourceContainer {
 public:
     explicit LayoutSVGResourceFilter(SVGFilterElement*);
 
@@ skipping 30 matching lines @@
 
     using FilterMap = WillBePersistentHeapHashMap<LayoutObject*, OwnPtrWillBeMember<FilterData>>;
     FilterMap m_filter;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGResourceFilter, isSVGResourceFilter());
 
 }
 
 #endif