Use an SVGElementProxy in ReferenceClipPathOperation

third_party/WebKit/Source/core/svg/SVGElementRareData.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
@@ skipping 13 matching lines @@
 #include "platform/heap/Handle.h"
 #include "platform/transforms/AffineTransform.h"
 #include "wtf/HashSet.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/StdLibExtras.h"
 
 namespace blink {
 
 class CSSCursorImageValue;
 class SVGCursorElement;
+class SVGElementProxySet;
 
 class SVGElementRareData
     : public GarbageCollectedFinalized<SVGElementRareData> {
   WTF_MAKE_NONCOPYABLE(SVGElementRareData);
 
  public:
   SVGElementRareData(SVGElement* owner)
       : m_owner(owner),
         m_cursorElement(nullptr),
         m_cursorImageValue(nullptr),
         m_correspondingElement(nullptr),
         m_instancesUpdatesBlocked(false),
         m_useOverrideComputedStyle(false),
         m_needsOverrideComputedStyleUpdate(false),
         m_webAnimatedAttributesDirty(false) {}
 
   SVGElementSet& outgoingReferences() { return m_outgoingReferences; }
   const SVGElementSet& outgoingReferences() const {
     return m_outgoingReferences;
   }
   SVGElementSet& incomingReferences() { return m_incomingReferences; }
   const SVGElementSet& incomingReferences() const {
     return m_incomingReferences;
   }
 
+  SVGElementProxySet& ensureElementProxySet();
+
   HeapHashSet<WeakMember<SVGElement>>& elementInstances() {
     return m_elementInstances;
   }
   const HeapHashSet<WeakMember<SVGElement>>& elementInstances() const {
     return m_elementInstances;
   }
 
   bool instanceUpdatesBlocked() const { return m_instancesUpdatesBlocked; }
   void setInstanceUpdatesBlocked(bool value) {
     m_instancesUpdatesBlocked = value;
@@ skipping 49 matching lines @@
   DECLARE_TRACE();
   void processWeakMembers(Visitor*);
 
  private:
   Member<SVGElement> m_owner;
   SVGElementSet m_outgoingReferences;
   SVGElementSet m_incomingReferences;
   HeapHashSet<WeakMember<SVGElement>> m_elementInstances;
   WeakMember<SVGCursorElement> m_cursorElement;
   WeakMember<const CSSCursorImageValue> m_cursorImageValue;
+  Member<SVGElementProxySet> m_elementProxySet;
   Member<SVGElement> m_correspondingElement;
   bool m_instancesUpdatesBlocked : 1;
   bool m_useOverrideComputedStyle : 1;
   bool m_needsOverrideComputedStyleUpdate : 1;
   bool m_webAnimatedAttributesDirty : 1;
   HashSet<const QualifiedName*> m_webAnimatedAttributes;
   Member<MutableStylePropertySet> m_animatedSMILStyleProperties;
   RefPtr<ComputedStyle> m_overrideComputedStyle;
   // Used by <animateMotion>
   AffineTransform m_animateMotionTransform;
 };
 
 }  // namespace blink
 
 #endif