Index: Source/core/page/PageLifecycleNotifier.h |
diff --git a/Source/core/page/PageLifecycleNotifier.h b/Source/core/page/PageLifecycleNotifier.h |
index 9c28c6731e14b984b42aea76ae3cb3e00dcde310..1cd9fb8dc05668fe5344eba5ed192eb11a1ce7e7 100644 |
--- a/Source/core/page/PageLifecycleNotifier.h |
+++ b/Source/core/page/PageLifecycleNotifier.h |
@@ -45,11 +45,13 @@ public: |
virtual void addObserver(Observer*) override; |
virtual void removeObserver(Observer*) override; |
+ virtual void trace(Visitor*) override; |
+ |
protected: |
explicit PageLifecycleNotifier(Page*); |
private: |
- using PageObserverSet = HashSet<PageLifecycleObserver*>; |
+ using PageObserverSet = WillBeHeapHashSet<RawPtrWillBeWeakMember<PageLifecycleObserver>>; |
PageObserverSet m_pageObservers; |
}; |