SVG object with same idrefs get conflicted even they are under different shadow root

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

Index: third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
diff --git a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
index a825a447ac096c4f4551391d614ad6575477191b..21078c8bf3c6e957df52fe9870913aeab1247e2a 100644
--- a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
+++ b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
@@ -51,10 +51,6 @@ public:
     // 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();
@@ -85,9 +81,6 @@ private:
     HeapHashSet<Member<SVGSVGElement>> m_timeContainers; // For SVG 1.2 support this will need to be made more general.
     using SVGElementSet = HeapHashSet<Member<SVGElement>>;
     SVGElementSet m_webAnimationsPendingSVGElements;
-    HashMap<AtomicString, LayoutSVGResourceContainer*> m_resources;
-    HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResources; // Resources that are pending.
-    HeapHashMap<AtomicString, Member<SVGPendingElements>> m_pendingResourcesForRemoval; // Resources that are pending and scheduled for removal.
     SVGResourcesCache m_resourcesCache;
     HeapHashSet<Member<SVGSVGElement>> m_relativeLengthSVGRoots; // Root SVG elements with relative length descendants.
     FloatPoint m_translate;
@@ -96,25 +89,7 @@ private:
 #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();
-
-    // The following two functions are used for scheduling a pending resource to be removed.
-    void markPendingResourcesForRemoval(const AtomicString&);
-    Element* removeElementFromPendingResourcesForRemoval(const AtomicString&);
-
-private:
-    SVGPendingElements* removePendingResourceForRemoval(const AtomicString&);
 };
 
 } // namespace blink