Add [WillBeGarbageCollected] to Event.idl

Source/core/events/PopStateEvent.cpp

Index: Source/core/events/PopStateEvent.cpp
diff --git a/Source/core/events/PopStateEvent.cpp b/Source/core/events/PopStateEvent.cpp
index 73cad72be53f4e7c891145696303c4940d71b9b3..91dd5c5e372375bbd22580eb1d23b9d6ef165e7c 100644
--- a/Source/core/events/PopStateEvent.cpp
+++ b/Source/core/events/PopStateEvent.cpp
@@ -59,19 +59,19 @@ PopStateEvent::~PopStateEvent()
 {
 }
 
-PassRefPtr<PopStateEvent> PopStateEvent::create()
+PassRefPtrWillBeRawPtr<PopStateEvent> PopStateEvent::create()
 {
-    return adoptRef(new PopStateEvent);
+    return adoptRefWillBeRefCountedGarbageCollected(new PopStateEvent);
 }
 
-PassRefPtr<PopStateEvent> PopStateEvent::create(PassRefPtr<SerializedScriptValue> serializedState, PassRefPtrWillBeRawPtr<History> history)
+PassRefPtrWillBeRawPtr<PopStateEvent> PopStateEvent::create(PassRefPtr<SerializedScriptValue> serializedState, PassRefPtrWillBeRawPtr<History> history)
 {
-    return adoptRef(new PopStateEvent(serializedState, history));
+    return adoptRefWillBeRefCountedGarbageCollected(new PopStateEvent(serializedState, history));
 }
 
-PassRefPtr<PopStateEvent> PopStateEvent::create(const AtomicString& type, const PopStateEventInit& initializer)
+PassRefPtrWillBeRawPtr<PopStateEvent> PopStateEvent::create(const AtomicString& type, const PopStateEventInit& initializer)
 {
-    return adoptRef(new PopStateEvent(type, initializer));
+    return adoptRefWillBeRefCountedGarbageCollected(new PopStateEvent(type, initializer));
 }
 
 const AtomicString& PopStateEvent::interfaceName() const