mOwner = new nsPluginInstanceOwner();
mOwner = new pluginInstanceOwner();
PluginViewerImpl::Init(nsNativeWidget aNativeParent,                       nsIDeviceContext* aDeviceContext,                       nsIPref* aPrefs,                       const nsRect& aBounds,                       nsScrollPreference aScrolling){  nsresult rv = MakeWindow(aNativeParent, aDeviceContext, aBounds);  if (NS_OK == rv) {    mOwner = new nsPluginInstanceOwner();    if (nsnull != mOwner) {      NS_ADDREF(mOwner);      rv = mOwner->Init(this, mWindow);    }  }  return rv;}