sheriff: mark one serviceworker wpt test as msan timeout

Bug: 1073427
Change-Id: Ieb89ebe01c732c3b328cfe273953ed6cb2629c36
Tbr: collinbaker@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2160352Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#761451}

third_party/blink/web_tests/MSANExpectations

@@ -412,3 +412,4 @@ crbug.com/1073062 [ Linux ] external/wpt/page-lifecycle/idlharness.html [ Timeou
 crbug.com/1073427 [ Linux ] virtual/cache-storage-eager-reading/external/wpt/service-workers/service-worker/idlharness-sw.https.html [ Timeout ]
 crbug.com/1073427 [ Linux ] virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/idlharness-sw.https.html [ Timeout ]
 crbug.com/1073427 [ Linux ] virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/idlharness-sw.https.html [ Timeout ]
+crbug.com/1073427 [ Linux ] external/wpt/service-workers/service-worker/idlharness-sw.https.html [ Timeout ]