Allocate XMLHttpRequest on the eagerly finalized heap.

Source/core/xmlhttprequest/XMLHttpRequest.cpp

 /*
  *  Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org>
  *  Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org>
  *  Copyright (C) 2008, 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 206 matching lines @@
     , m_error(false)
     , m_uploadEventsAllowed(true)
     , m_uploadComplete(false)
     , m_sameOriginRequest(true)
     , m_downloadingToFile(false)
     , m_responseTextOverflow(false)
 {
 #ifndef NDEBUG
     xmlHttpRequestCounter.increment();
 #endif
+#if ENABLE(ASSERT) && !ENABLE(OILPAN)
+    // Verify that this object was allocated on the 'eager' heap.
+    // (this check comes 'for free' with Oilpan enabled.)
+    ASSERT(IS_EAGERLY_FINALIZED());
+#endif
 }
 
 XMLHttpRequest::~XMLHttpRequest()
 {
 #ifndef NDEBUG
     xmlHttpRequestCounter.decrement();
 #endif
 }
 
 Document* XMLHttpRequest::document() const
@@ skipping 1430 matching lines @@
     visitor->trace(m_responseDocumentParser);
     visitor->trace(m_progressEventThrottle);
     visitor->trace(m_upload);
     visitor->trace(m_blobLoader);
     XMLHttpRequestEventTarget::trace(visitor);
     DocumentParserClient::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink