Oilpan: add more Event-related USED_FROM_MULTIPLE_THREADS() decls.

Source/heap/ThreadState.h

Index: Source/heap/ThreadState.h
diff --git a/Source/heap/ThreadState.h b/Source/heap/ThreadState.h
index a6adfcdf61cacf8477a491247f3c76967feb9453..47af09e710907fd9e47465fef51049180d79aab8 100644
--- a/Source/heap/ThreadState.h
+++ b/Source/heap/ThreadState.h
@@ -547,6 +547,7 @@ public:
 
 // FIXME: Experiment if the threading affinity really matters for performance.
 // FIXME: Move these macros and other related structures to a separate file.
+USED_FROM_MULTIPLE_THREADS(CloseEvent);
 USED_FROM_MULTIPLE_THREADS(Crypto);
 USED_FROM_MULTIPLE_THREADS(DOMParser);
 USED_FROM_MULTIPLE_THREADS(DOMURL);
@@ -577,6 +578,7 @@ USED_FROM_MULTIPLE_THREADS(WebKitNotification);
 USED_FROM_MULTIPLE_THREADS(WorkerCrypto);
 USED_FROM_MULTIPLE_THREADS(WorkerPerformance);
 USED_FROM_MULTIPLE_THREADS(XMLHttpRequest);
+USED_FROM_MULTIPLE_THREADS(XMLHttpRequestProgressEvent);
 USED_FROM_MULTIPLE_THREADS(XMLSerializer);
 USED_FROM_MULTIPLE_THREADS(XPathEvaluator);
 USED_FROM_MULTIPLE_THREADS(XPathExpression);