Stop re-signaling a slotchange event

third_party/WebKit/Source/core/html/HTMLSlotElement.h

Index: third_party/WebKit/Source/core/html/HTMLSlotElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLSlotElement.h b/third_party/WebKit/Source/core/html/HTMLSlotElement.h
index 7b6e44a21bd7e6845d14ddc00d44a68e31c36efa..41cf631b1fdd2b9e6e5efc42c04a2e915f17d8fc 100644
--- a/third_party/WebKit/Source/core/html/HTMLSlotElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLSlotElement.h
@@ -88,13 +88,12 @@ class CORE_EXPORT HTMLSlotElement final : public HTMLElement {
   bool hasAssignedNodesSlow() const;
   bool findHostChildWithSameSlotName() const;
 
-  void enqueueSlotChangeEvent();
-
   void clearDistribution();
   void saveAndClearDistribution();
 
   bool supportsDistribution() const { return isInShadowTree(); }
   void updateDistributedNodesManually();
+  void didSlotChange(SlotChangeType);
 
   static AtomicString normalizeSlotName(const AtomicString&);
 
@@ -107,6 +106,7 @@ class CORE_EXPORT HTMLSlotElement final : public HTMLElement {
   void removedFrom(ContainerNode*) final;
   void willRecalcStyle(StyleRecalcChange) final;
 
+  void enqueueSlotChangeEvent();
   void dispatchSlotChangeEvent();
 
   HeapVector<Member<Node>> m_assignedNodes;