Revert "Add [WillBeGarbageCollected] to Event.idl"

Source/modules/speech/SpeechRecognitionEvent.h

Index: Source/modules/speech/SpeechRecognitionEvent.h
diff --git a/Source/modules/speech/SpeechRecognitionEvent.h b/Source/modules/speech/SpeechRecognitionEvent.h
index 45357869c3c8b1d65167276ea02ba49cb9b069c1..7ab8eb66662a85409f093007c0c7a0f81a5e5e01 100644
--- a/Source/modules/speech/SpeechRecognitionEvent.h
+++ b/Source/modules/speech/SpeechRecognitionEvent.h
@@ -48,8 +48,8 @@ public:
 
 class SpeechRecognitionEvent FINAL : public Event {
 public:
-    static PassRefPtrWillBeRawPtr<SpeechRecognitionEvent> create();
-    static PassRefPtrWillBeRawPtr<SpeechRecognitionEvent> create(const AtomicString&, const SpeechRecognitionEventInit&);
+    static PassRefPtr<SpeechRecognitionEvent> create();
+    static PassRefPtr<SpeechRecognitionEvent> create(const AtomicString&, const SpeechRecognitionEventInit&);
     virtual ~SpeechRecognitionEvent();
 
     static PassRefPtr<SpeechRecognitionEvent> createResult(unsigned long resultIndex, const WillBeHeapVector<RefPtrWillBeMember<SpeechRecognitionResult> >& results);