Oilpan: fix WorkerThreadStartupData finalization handling.

Source/core/workers/SharedWorkerGlobalScope.h

Index: Source/core/workers/SharedWorkerGlobalScope.h
diff --git a/Source/core/workers/SharedWorkerGlobalScope.h b/Source/core/workers/SharedWorkerGlobalScope.h
index 93c5a27339a96ea5c220a6464ae6431e5d2db9af..1379b055e0191fc93a8eefc277207f36ec7649ea 100644
--- a/Source/core/workers/SharedWorkerGlobalScope.h
+++ b/Source/core/workers/SharedWorkerGlobalScope.h
@@ -45,7 +45,7 @@ class SharedWorkerGlobalScope final : public WorkerGlobalScope {
     DEFINE_WRAPPERTYPEINFO();
 public:
     typedef WorkerGlobalScope Base;
-    static PassRefPtrWillBeRawPtr<SharedWorkerGlobalScope> create(const String& name, SharedWorkerThread*, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData>);
+    static PassRefPtrWillBeRawPtr<SharedWorkerGlobalScope> create(const String& name, SharedWorkerThread*, PassOwnPtr<WorkerThreadStartupData>);
     virtual ~SharedWorkerGlobalScope();
 
     virtual bool isSharedWorkerGlobalScope() const override { return true; }