*result = mPluginWindow.width;
NS_ENSURE_TRUE(mPluginWindow, NS_ERROR_NULL_POINTER);  *result = mPluginWindow->width;
NS_IMETHODIMP nsPluginInstanceOwner::GetWidth(PRUint32 *result){  NS_ENSURE_ARG_POINTER(result);  *result = mPluginWindow.width;  return NS_OK;}