Oilpan: Move [WillBeGarbageCollected] from Node to EventTarget.

Source/modules/serviceworkers/ServiceWorkerContainer.cpp

Index: Source/modules/serviceworkers/ServiceWorkerContainer.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
index cd0c219d9ce70fb16a6d7dd1d9c442c263cf7566..5c1180b33eb9c7b3f92b021de733d882ccf9779b 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
@@ -56,9 +56,9 @@ using blink::WebServiceWorkerProvider;
 
 namespace WebCore {
 
-PassRefPtr<ServiceWorkerContainer> ServiceWorkerContainer::create(ExecutionContext* executionContext)
+PassRefPtrWillBeRawPtr<ServiceWorkerContainer> ServiceWorkerContainer::create(ExecutionContext* executionContext)
 {
-    return adoptRef(new ServiceWorkerContainer(executionContext));
+    return adoptRefWillBeRefCountedGarbageCollected(new ServiceWorkerContainer(executionContext));
 }
 
 ServiceWorkerContainer::~ServiceWorkerContainer()