SVG objects with same idrefs conflict when under different shadow root

third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h

 /*
  * Copyright (C) 2006 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * 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 SVGDocumentExtensions_h
 #define SVGDocumentExtensions_h
 
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "platform/geometry/FloatPoint.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Forward.h"
-#include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
-#include "wtf/text/AtomicStringHash.h"
 
 namespace blink {
 
 class Document;
-class Element;
-class LayoutSVGResourceContainer;
 class SVGElement;
 class SVGSVGElement;
 class SubtreeLayoutScope;
 
 class SVGDocumentExtensions
     : public GarbageCollectedFinalized<SVGDocumentExtensions> {
   WTF_MAKE_NONCOPYABLE(SVGDocumentExtensions);
 
  public:
-  typedef HeapHashSet<Member<Element>> SVGPendingElements;
   explicit SVGDocumentExtensions(Document*);
   ~SVGDocumentExtensions();
 
   void addTimeContainer(SVGSVGElement*);
   void removeTimeContainer(SVGSVGElement*);
 
   // Records the SVG element as having a Web Animation on an SVG attribute that
   // needs applying.
   void addWebAnimationsPendingSVGElement(SVGElement&);
 
-  void addResource(const AtomicString& id, LayoutSVGResourceContainer*);
-  void removeResource(const AtomicString& id);
-  LayoutSVGResourceContainer* resourceById(const AtomicString& id) const;
-
   static void serviceOnAnimationFrame(Document&);
 
   void startAnimations();
   void pauseAnimations();
   void dispatchSVGLoadEventToOutermostSVGElements();
 
   void reportError(const String&);
 
   SVGResourcesCache& resourcesCache() { return m_resourcesCache; }
 
@@ skipping 10 matching lines @@
   static SVGSVGElement* rootElement(const Document&);
   SVGSVGElement* rootElement() const;
 
   DECLARE_TRACE();
 
  private:
   Member<Document> m_document;
   HeapHashSet<Member<SVGSVGElement>> m_timeContainers;
   using SVGElementSet = HeapHashSet<Member<SVGElement>>;
   SVGElementSet m_webAnimationsPendingSVGElements;
-  HashMap<AtomicString, LayoutSVGResourceContainer*> m_resources;
-  // Resources that are pending.
-  HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResources;
   SVGResourcesCache m_resourcesCache;
   // Root SVG elements with relative length descendants.
   HeapHashSet<Member<SVGSVGElement>> m_relativeLengthSVGRoots;
   FloatPoint m_translate;
 #if DCHECK_IS_ON()
   bool m_inRelativeLengthSVGRootsInvalidation = false;
 #endif
 
  public:
-  // This HashMap contains a list of pending resources. Pending resources, are
-  // such which are referenced by any object in the SVG document, but do NOT
-  // exist yet.
-  // For instance, dynamically build gradients / patterns / clippers...
-  void addPendingResource(const AtomicString& id, Element*);
-  bool hasPendingResource(const AtomicString& id) const;
-  bool isElementPendingResources(Element*) const;
-  bool isElementPendingResource(Element*, const AtomicString& id) const;
-  void clearHasPendingResourcesIfPossible(Element*);
-  void removeElementFromPendingResources(Element*);
-  SVGPendingElements* removePendingResource(const AtomicString& id);
-
   void serviceAnimations();
 };
 
 }  // namespace blink
 
 #endif