Keep auxilliary media objects on the heap always.

Source/core/html/MediaKeyError.h

 /*
  * Copyright (C) 2012 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef MediaKeyError_h
 #define MediaKeyError_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
 
 namespace blink {
 
-class CORE_EXPORT MediaKeyError final : public RefCountedWillBeGarbageCollectedFinalized<MediaKeyError>, public ScriptWrappable {
+class CORE_EXPORT MediaKeyError final : public GarbageCollected<MediaKeyError>, public ScriptWrappable {
     DEFINE_WRAPPERTYPEINFO();
 public:
     enum {
         MEDIA_KEYERR_UNKNOWN = 1,
         MEDIA_KEYERR_CLIENT,
         MEDIA_KEYERR_SERVICE,
         MEDIA_KEYERR_OUTPUT,
         MEDIA_KEYERR_HARDWARECHANGE,
         MEDIA_KEYERR_DOMAIN
     };
     typedef unsigned short Code;
 
-    static PassRefPtrWillBeRawPtr<MediaKeyError> create(Code code, unsigned systemCode = 0)
+    static MediaKeyError* create(Code code, unsigned systemCode = 0)
     {
-        return adoptRefWillBeNoop(new MediaKeyError(code, systemCode));
+        return new MediaKeyError(code, systemCode);
     }
 
     Code code() const { return m_code; }
     unsigned systemCode() { return m_systemCode; }
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     MediaKeyError(Code code, unsigned systemCode)
         : m_code(code)
         , m_systemCode(systemCode)
     {
     }
 
     Code m_code;
     unsigned m_systemCode;
 };
 
 } // namespace blink
 
 #endif // MediaKeyError_h