Replace FilterData::boundaries with Filter::filterRegion()

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 47 matching lines @@
     }
 
     void dispose();
 
     DECLARE_TRACE();
 
     RefPtrWillBeMember<SVGFilter> filter;
     RefPtrWillBeMember<SVGFilterBuilder> builder;
     OwnPtr<DisplayItemList> m_displayItemList;
     OwnPtr<GraphicsContext> m_context;
-    FloatRect boundaries;
     FilterDataState m_state;
 
 private:
     FilterData() : m_state(Initial) { }
 };
 
 class LayoutSVGResourceFilter final : public LayoutSVGResourceContainer {
 public:
     explicit LayoutSVGResourceFilter(SVGFilterElement*);
 
@@ skipping 28 matching lines @@
 
     using FilterMap = WillBePersistentHeapHashMap<LayoutObject*, OwnPtrWillBeMember<FilterData>>;
     FilterMap m_filter;
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGResourceFilter, isSVGResourceFilter());
 
 }
 
 #endif