Disable virtual/threaded/animations/interpolation/svg-stroke-dasharray-interpolation.html

Timeouts on mac_chromium_rel_ng

TBR=smcgruer@chromium.org

Bug: 855055
Change-Id: Ifb98ee39067afac3d82e8655d784224d27dc57eb
Reviewed-on: https://chromium-review.googlesource.com/1111178
Commit-Queue: Darren Shen <shend@chromium.org>
Reviewed-by: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#569488}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4768,3 +4768,6 @@ crbug.com/854910 [ Mac ] fast/scroll-behavior/smooth-scroll/track-scroll.html [
 crbug.com/854910 [ Mac ] virtual/scroll_customization/fast/scroll-behavior/smooth-scroll/track-scroll.html [ Failure Pass ]
 crbug.com/855222 [ Mac ] external/wpt/orientation-sensor/AbsoluteOrientationSensor-iframe-access.https.html [ Failure Pass ]
 crbug.com/855222 [ Mac ] external/wpt/orientation-sensor/RelativeOrientationSensor-iframe-access.https.html [ Failure Pass ]
+
+# Sheriff 2018-06-22
+crbug.com/855055 [ Mac ] virtual/threaded/animations/interpolation/svg-stroke-dasharray-interpolation.html [ Pass Timeout ]