The layout test css3/flexbox/flex-rounding.html is failing on platform GTK since r173049 <http://trac.webkit.org/changeset/173049>. The diff is the following: http://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r173053%20%282403%29/css3/flexbox/flex-rounding-pretty-diff.html
The layout test fast/sub-pixel/client-width-height-snapping.html is also failing on platform GTK since r173049. The diff is: http://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20%28Tests%29/r173053%20%282403%29/fast/sub-pixel/client-width-height-snapping-pretty-diff.html
Updated GTK TestExpectations on http://trac.webkit.org/changeset/173319
The layout test css3/flexbox/flex-rounding.html is passing since r174738 (http://trac.webkit.org/changeset/174738). This revision updates the expected file.
Removed from the expected failure from the GTK TestExpectations on r180555. Closing.