Disabled fontfaceset-check-platform-fonts.html on Windows

virtual/sharedarraybuffer/fast/css/fontfaceset-check-platform-fonts.html
is flaky on Windows.

BUG=713094
TBR=ksakamoto

Review-Url: https://codereview.chromium.org/2832593002
Cr-Commit-Position: refs/heads/master@{#465710}

third_party/WebKit/LayoutTests/TestExpectations

@@ -2987,6 +2987,9 @@ crbug.com/706091 [ Linux ] virtual/wheelscrolllatching/fast/events/wheel/wheel-s
 # for Mac earlier in the file, so just skip it everywhere.
 crbug.com/707689 shapedetection/detection-HTMLCanvasElement.html [ Skip ]
 
+# Sheriff failures 2017-04-19
+crbug.com/713094 [ Win ] virtual/sharedarraybuffer/fast/css/fontfaceset-check-platform-fonts.html [ Failure Pass ]
+
 # Tests to be run only under virtual/experimental-canvas-features/
 crbug.com/682753 fast/canvas-experimental [ Skip ]