Comment 2 for bug 1378706

The problem is confined to demo shell. It seems the bypass filter is not even getting attempted in DemoCompositor:

    if (!nonrenderlist_elements && <== fails
        display_buffer.post_renderables_if_optimizable(renderable_list))

So we need to remove the "!nonrenderlist_elements &&" part. But do so in a way that doesn't break Android's overlay filter.