Add [WillBeGarbageCollected] to Event.idl

Source/core/speech/SpeechInputEvent.h

Index: Source/core/speech/SpeechInputEvent.h
diff --git a/Source/core/speech/SpeechInputEvent.h b/Source/core/speech/SpeechInputEvent.h
index b09cd94aa019977ca7e51927e32dbc306a265bf5..85f6bf4d3e805505866fca1396f308c93a6f85c1 100644
--- a/Source/core/speech/SpeechInputEvent.h
+++ b/Source/core/speech/SpeechInputEvent.h
@@ -37,8 +37,8 @@ namespace WebCore {
 
 class SpeechInputEvent FINAL : public Event {
 public:
-    static PassRefPtr<SpeechInputEvent> create();
-    static PassRefPtr<SpeechInputEvent> create(const AtomicString& eventType, const SpeechInputResultArray& results);
+    static PassRefPtrWillBeRawPtr<SpeechInputEvent> create();
+    static PassRefPtrWillBeRawPtr<SpeechInputEvent> create(const AtomicString& eventType, const SpeechInputResultArray& results);
     virtual ~SpeechInputEvent();
 
     SpeechInputResultList* results() const { return m_results.get(); }