Oilpan: prefer eager finalization over prefinalizers.

Source/modules/serviceworkers/ServiceWorker.h

Index: Source/modules/serviceworkers/ServiceWorker.h
diff --git a/Source/modules/serviceworkers/ServiceWorker.h b/Source/modules/serviceworkers/ServiceWorker.h
index e63ff4b52d530424a1a1da7834100f621c592f58..b7fd80387c2b8754acd971aec78af200589a6c15 100644
--- a/Source/modules/serviceworkers/ServiceWorker.h
+++ b/Source/modules/serviceworkers/ServiceWorker.h
@@ -48,13 +48,15 @@ class ScriptPromiseResolver;
 
 class MODULES_EXPORT ServiceWorker final : public AbstractWorker, public WebServiceWorkerProxy {
     DEFINE_WRAPPERTYPEINFO();
-    WILL_BE_USING_PRE_FINALIZER(ServiceWorker, dispose);
 public:
     typedef WebServiceWorker WebType;
     static PassRefPtrWillBeRawPtr<ServiceWorker> from(ExecutionContext*, WebType*);
 
     ~ServiceWorker() override;
 
+    // Eager finalization needed to promptly release owned WebServiceWorker.
+    EAGERLY_FINALIZE();
+
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
     void terminate(ExceptionState&);
 
@@ -77,8 +79,6 @@ private:
     virtual bool hasPendingActivity() const override;
     virtual void stop() override;
 
-    void dispose();
-
     OwnPtr<WebServiceWorker> m_outerWorker;
     bool m_wasStopped;
 };