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 50853b93ea94e88bc80ebbe73c91902c818704e2..bfab3d40dc448deb16d33c831ac809068465b50c 100644
--- a/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerGlobalScope.cpp
@@ -162,7 +162,7 @@ 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) {