Tracking filter mutation via SVGElementProxy

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 9896b0044f41f211f504e82b61cc604edec86a2f..4fa2a7f7b36424666bd0e4d3467708262232a26d 100644
--- a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
+++ b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
@@ -32,11 +32,13 @@
 namespace blink {
 
 class Document;
+class Element;
 class LayoutSVGResourceContainer;
-class SubtreeLayoutScope;
-class SVGSVGElement;
 class SVGElement;
-class Element;
+class SVGElementProxy;
+class SVGElementProxySet;
+class SVGSVGElement;
+class SubtreeLayoutScope;
 
 class SVGDocumentExtensions
     : public GarbageCollectedFinalized<SVGDocumentExtensions> {
@@ -85,13 +87,13 @@ class SVGDocumentExtensions
 
  private:
   Member<Document> m_document;
-  // For SVG 1.2 support this will need to be made more general.
   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;
+  HeapHashMap<AtomicString, Member<SVGElementProxySet>> m_pendingProxies;
   // Resources that are pending and scheduled for removal.
   HeapHashMap<AtomicString, Member<SVGPendingElements>>
       m_pendingResourcesForRemoval;
@@ -115,6 +117,8 @@ class SVGDocumentExtensions
   void clearHasPendingResourcesIfPossible(Element*);
   void removeElementFromPendingResources(Element*);
   SVGPendingElements* removePendingResource(const AtomicString& id);
+  void attachPendingProxy(SVGElementProxy&);
+  void invalidatePendingProxies(const AtomicString& id);
 
   void serviceAnimations();