Oilpan: Move the EventListener hierarchy to Oilpan's heap

Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp

Index: Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp b/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
index 9459305c759c2b7bce0042ea12f7d23828087bd4..b93d0d9483d683d4e052de28b35461c532eb351e 100644
--- a/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
@@ -170,7 +170,7 @@ void ServiceWorkerGlobalScope::setRegistration(WebServiceWorkerRegistration* reg
     m_registration = ServiceWorkerRegistration::from(executionContext(), registration);
 }
 
-bool ServiceWorkerGlobalScope::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
+bool ServiceWorkerGlobalScope::addEventListener(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener> listener, bool useCapture)
 {
     if (m_didEvaluateScript) {
         if (eventType == EventTypeNames::install) {