Get rid of RenderLayer tracking in RenderSVGResourceContainer.

Source/core/rendering/svg/RenderSVGResourceContainer.h

 /*
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef RenderSVGResourceContainer_h
 #define RenderSVGResourceContainer_h
 
 #include "core/rendering/svg/RenderSVGHiddenContainer.h"
 #include "core/rendering/svg/RenderSVGResource.h"
 
 namespace blink {
 
-class RenderLayer;
-
 class RenderSVGResourceContainer : public RenderSVGHiddenContainer,
                                    public RenderSVGResource {
 public:
     explicit RenderSVGResourceContainer(SVGElement*);
     virtual ~RenderSVGResourceContainer();
 
     virtual void layout() OVERRIDE;
     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE FINAL;
 
     virtual bool isSVGResourceContainer() const OVERRIDE FINAL { return true; }
 
     static AffineTransform transformOnNonScalingStroke(RenderObject*, const AffineTransform& resourceTransform);
 
     void idChanged();
-    void addClientRenderLayer(Node*);
-    void addClientRenderLayer(RenderLayer*);
-    void removeClientRenderLayer(RenderLayer*);
+    void addClient(RenderObject*);
+    void removeClient(RenderObject*);
 
     void invalidateCacheAndMarkForLayout(SubtreeLayoutScope* = 0);
 
 protected:
     // When adding modes, make sure we don't overflow m_invalidationMask below.
     enum InvalidationMode {
         LayoutAndBoundariesInvalidation = 1 << 0,
         BoundariesInvalidation = 1 << 1,
         RepaintInvalidation = 1 << 2,
         ParentOnlyInvalidation = 1 << 3
     };
 
     // Used from the invalidateClient/invalidateClients methods from classes, inheriting from us.
     void markAllClientsForInvalidation(InvalidationMode);
-    void markAllClientLayersForInvalidation();
     void markClientForInvalidation(RenderObject*, InvalidationMode);
 
     void clearInvalidationMask() { m_invalidationMask = 0; }
 
     static AffineTransform computeResourceSpaceTransform(RenderObject*, const AffineTransform& baseTransform, const SVGRenderStyle&, unsigned short resourceMode);
 
     bool m_isInLayout;
 
 private:
     friend class SVGResourcesCache;
-    void addClient(RenderObject*);
-    void removeClient(RenderObject*);
 
     virtual void willBeDestroyed() OVERRIDE FINAL;
     void registerResource();
 
     AtomicString m_id;
     // Track global (markAllClientsForInvalidation) invals to avoid redundant crawls.
     unsigned m_invalidationMask : 8;
 
     bool m_registered : 1;
     bool m_isInvalidating : 1;
     // 22 padding bits available
 
     HashSet<RenderObject*> m_clients;
-    HashSet<RenderLayer*> m_clientLayers;
 };
 
 inline RenderSVGResourceContainer* getRenderSVGResourceContainerById(TreeScope& treeScope, const AtomicString& id)
 {
     if (id.isEmpty())
         return 0;
 
     if (RenderSVGResourceContainer* renderResource = treeScope.document().accessSVGExtensions().resourceById(id))
         return renderResource;
 
     return 0;
 }
 
 template<typename Renderer>
 Renderer* getRenderSVGResourceById(TreeScope& treeScope, const AtomicString& id)
 {
     if (RenderSVGResourceContainer* container = getRenderSVGResourceContainerById(treeScope, id))
         return container->cast<Renderer>();
 
     return 0;
 }
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderSVGResourceContainer, isSVGResourceContainer());
 
 }
 
 #endif