RenderLayer::updateOrRemoveFilterEffect is called in clearBacking(), which is called from RenderLayer::~RenderLayer, meaning that the filters are rebuild when deleting a layer, but they are not going to be used anyway.
Avoid creating new filters when the RenderLayer is going out of scope.
Created attachment 134422 [details]
Comment on attachment 134422 [details]
Clearing flags on attachment: 134422
Committed r112497: <http://trac.webkit.org/changeset/112497>
All reviewed patches have been landed. Closing bug.