The inspector-protocol/layers/layers-for-node.html layout test is timing out ever since it's been added in r144747. http://trac.webkit.org/changeset/144747 http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&tests=inspector-protocol%2Flayers%2Flayers-for-node.html
This test now works as expected. Closing