Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/modules/indexeddb/IDBRequestTest.cpp

Index: Source/modules/indexeddb/IDBRequestTest.cpp
diff --git a/Source/modules/indexeddb/IDBRequestTest.cpp b/Source/modules/indexeddb/IDBRequestTest.cpp
index c9316ca271f2e069c0a15461727f4c5e5bdf47c3..2889cd2e4e5d1b77df031639eb2bd07099fb02c9 100644
--- a/Source/modules/indexeddb/IDBRequestTest.cpp
+++ b/Source/modules/indexeddb/IDBRequestTest.cpp
@@ -45,7 +45,7 @@ class NullEventQueue FINAL : public EventQueue {
 public:
     NullEventQueue() { }
     virtual ~NullEventQueue() { }
-    virtual bool enqueueEvent(PassRefPtr<Event>) OVERRIDE { return true; }
+    virtual bool enqueueEvent(PassRefPtrWillBeRawPtr<Event>) OVERRIDE { return true; }
     virtual bool cancelEvent(Event*) OVERRIDE { return true; }
     virtual void close() OVERRIDE { }
 };