LayoutTest fast/images/gif-loop-count.html is a flaky failure https://build.webkit.org/builders/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/builds/428 https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fimages%2Fgif-loop-count.html Link to image diff showing a red square instead of a green square: https://build.webkit.org/results/Apple%20iOS%2010%20Simulator%20Release%20WK2%20(Tests)/r206579%20(428)/fast/images/gif-loop-count-diffs.html
Marked test as flaky in https://trac.webkit.org/changeset/206657