Mark external/wpt/orientation-event/idlharness.https.window.html Timeout

This is MSAN only.

TBR=gayane@chromium.org
NOTRY=true

Bug: 856601
Change-Id: I623d7f5833d92aa5d9227c623069e7c53810cda3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1644993Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666256}

third_party/blink/web_tests/MSANExpectations

@@ -245,3 +245,6 @@ crbug.com/929122 [ Linux ] external/wpt/html/dom/interfaces.worker.html [ Timeou
 crbug.com/856601 [ Linux ] external/wpt/notifications/idlharness.https.window.html [ Pass Timeout ]
 crbug.com/856601 [ Linux ] external/wpt/fetch/cors-rfc1918/idlharness.tentative.any.serviceworker.html [ Pass Timeout ]
 crbug.com/856601 [ Linux ] external/wpt/notifications/idlharness.https.any.sharedworker.html [ Pass Timeout ]
+
+# Sheriff 2019-06-05
+crbug.com/856601 [ Linux ] external/wpt/orientation-event/idlharness.https.window.html [ Pass Timeout ]