WillBePersistentHeapHashSet  109 Source/core/css/CSSFontSelector.h     WillBePersistentHeapHashSet<RawPtrWillBeWeakMember<CSSFontSelectorClient> > m_clients;
WillBePersistentHeapHashSet  109 Source/core/loader/ImageLoader.h     typedef WillBePersistentHeapHashSet<RawPtrWillBeWeakMember<ImageLoaderClient> > ImageLoaderClientSet;
WillBePersistentHeapHashSet   83 Source/modules/geolocation/GeolocationController.h     typedef WillBePersistentHeapHashSet<RefPtrWillBeMember<Geolocation> > ObserversSet;
WillBePersistentHeapHashSet   94 Source/modules/geolocation/testing/GeolocationClientMock.h     typedef WillBePersistentHeapHashSet<RefPtrWillBeMember<Geolocation> > GeolocationSet;