class IdTargetObserver;
-class IdTargetObserverRegistry FINAL : public NoBaseWillBeGarbageCollectedFinalized<IdTargetObserverRegistry> {
+class IdTargetObserverRegistry final : public NoBaseWillBeGarbageCollectedFinalized<IdTargetObserverRegistry> {
WTF_MAKE_NONCOPYABLE(IdTargetObserverRegistry);
WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
friend class IdTargetObserver;