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..65495540ee259236e273ab68df6c386594a4f620 100644
--- a/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
+++ b/third_party/WebKit/Source/core/svg/SVGDocumentExtensions.h
@@ -32,11 +32,11 @@
 namespace blink {
 
 class Document;
+class Element;
 class LayoutSVGResourceContainer;
-class SubtreeLayoutScope;
-class SVGSVGElement;
 class SVGElement;
-class Element;
+class SVGSVGElement;
+class SubtreeLayoutScope;
 
 class SVGDocumentExtensions
     : public GarbageCollectedFinalized<SVGDocumentExtensions> {
@@ -85,7 +85,6 @@ 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;