LayoutTests/fast/canvas/canvas-strokePath-gradient-shadow.html and LayoutTests/fast/canvas/canvas-strokeRect-gradient-shadow.html started to crash on Chromium debug canaries, see dashboard: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=fast%2Fcanvas%2Fcanvas-strokePath-gradient-shadow.html%2Cfast%2Fcanvas%2Fcanvas-strokeRect-gradient-shadow.html WebKit blamelist r135422:r135422 and the change seems unrelated, the most suspicious Chromium change in range http://build.chromium.org/f/chromium/perf/dashboard/ui/changelog.html?url=/trunk/src&mode=html&range=169108:169085 is Skia roll http://src.chromium.org/viewvc/chrome?view=rev&revision=169091.
Updated test expectations: http://trac.webkit.org/changeset/135512
fixed in skia rev. 6544
Now passing in WebKit and removed from TestExpectations.