The svg/clip-path/clip-path-line-use-before-defined.svg layout test is failing since it was added in r180643 (http://trac.webkit.org/changeset/180643). The diff is the following https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r180999%20%286665%29/svg/clip-path/clip-path-line-use-before-defined-diffs.html
This seems to be passing now since r190840. Unskipped in r191101