Oilpan: Allocate all EventTarget derived types on the manged heap.

Source/modules/websockets/WebSocket.cpp

 /*
  * Copyright (C) 2011 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 668 matching lines @@
         overhead += 8;
     else if (payloadSize >= minimumPayloadSizeWithTwoByteExtendedPayloadLength)
         overhead += 2;
     return overhead;
 }
 
 void WebSocket::trace(Visitor* visitor)
 {
     visitor->trace(m_channel);
     visitor->trace(m_eventQueue);
+    EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace WebCore