Oilpan: have DOMException be on the heap by default.

Source/modules/fetch/BodyStreamBuffer.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/fetch/BodyStreamBuffer.h"
 
 #include "core/dom/DOMArrayBuffer.h"
 
 namespace blink {
@@ skipping 144 matching lines @@
 
 void BodyStreamBuffer::close()
 {
     ASSERT(!m_isClosed);
     ASSERT(!m_exception);
     m_isClosed = true;
     if (m_observer)
         m_observer->onClose();
 }
 
-void BodyStreamBuffer::error(PassRefPtrWillBeRawPtr<DOMException> exception)
+void BodyStreamBuffer::error(DOMException* exception)
 {
     ASSERT(exception);
     ASSERT(!m_isClosed);
     ASSERT(!m_exception);
     m_exception = exception;
     if (m_observer)
         m_observer->onError();
 }
 
 bool BodyStreamBuffer::readAllAndCreateBlobHandle(const String& contentType, BlobHandleCreatorClient* client)
@@ skipping 35 matching lines @@
     visitor->trace(m_canceller);
 }
 
 BodyStreamBuffer::BodyStreamBuffer(Canceller* canceller)
     : m_isClosed(false)
     , m_canceller(canceller)
 {
 }
 
 } // namespace blink