Add [WillBeGarbageCollected] to Event.idl

Source/core/events/ErrorEvent.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
     ErrorEventInit();
 
     String message;
     String filename;
     unsigned lineno;
     unsigned colno;
 };
 
 class ErrorEvent FINAL : public Event {
 public:
-    static PassRefPtr<ErrorEvent> create()
+    static PassRefPtrWillBeRawPtr<ErrorEvent> create()
     {
-        return adoptRef(new ErrorEvent);
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new ErrorEvent);
     }
-    static PassRefPtr<ErrorEvent> create(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber, PassRefPtr<DOMWrapperWorld> world)
+    static PassRefPtrWillBeRawPtr<ErrorEvent> create(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber, PassRefPtr<DOMWrapperWorld> world)
     {
-        return adoptRef(new ErrorEvent(message, fileName, lineNumber, columnNumber, world));
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new ErrorEvent(message, fileName, lineNumber, columnNumber, world));
     }
-    static PassRefPtr<ErrorEvent> create(const AtomicString& type, const ErrorEventInit& initializer)
+    static PassRefPtrWillBeRawPtr<ErrorEvent> create(const AtomicString& type, const ErrorEventInit& initializer)
     {
-        return adoptRef(new ErrorEvent(type, initializer));
+        return adoptRefCountedWillBeRefCountedGarbageCollected(new ErrorEvent(type, initializer));
     }
     static PassRefPtr<ErrorEvent> createSanitizedError(PassRefPtr<DOMWrapperWorld> world)
     {
         return adoptRef(new ErrorEvent("Script error.", String(), 0, 0, world));
     }
     virtual ~ErrorEvent();
 
     // As 'message' is exposed to JavaScript, never return unsanitizedMessage.
     const String& message() const { return m_sanitizedMessage; }
     const String& filename() const { return m_fileName; }
@@ skipping 21 matching lines @@
     String m_fileName;
     unsigned m_lineNumber;
     unsigned m_columnNumber;
 
     RefPtr<DOMWrapperWorld> m_world;
 };
 
 } // namespace WebCore
 
 #endif // ErrorEvent_h