Oilpan: have DOMException be on the heap by default.

Source/core/css/FontFace.cpp

 /*
  * Copyright (C) 2013 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 333 matching lines @@
         m_callbacks.swap(callbacks);
         for (size_t i = 0; i < callbacks.size(); ++i) {
             if (m_status == Loaded)
                 callbacks[i]->notifyLoaded(this);
             else
                 callbacks[i]->notifyError(this);
         }
     }
 }
 
-void FontFace::setError(PassRefPtrWillBeRawPtr<DOMException> error)
+void FontFace::setError(DOMException* error)
 {
     if (!m_error)
         m_error = error ? error : DOMException::create(NetworkError);
     setLoadStatus(Error);
 }
 
 ScriptPromise FontFace::fontStatusPromise(ScriptState* scriptState)
 {
     if (!m_loadedProperty) {
         m_loadedProperty = new LoadedProperty(scriptState->executionContext(), this, LoadedProperty::Loaded);
@@ skipping 215 matching lines @@
 {
     return m_cssFontFace->hadBlankText();
 }
 
 bool FontFace::hasPendingActivity() const
 {
     return m_status == Loading && executionContext() && !executionContext()->activeDOMObjectsAreStopped();
 }
 
 } // namespace blink