sheriff: mark dedicated-worker-import timeout under lsan

Bug: 1098782
Change-Id: I1a0221bb27a2180284b1193e59f73a31da5b8f74
Tbr: nhiroki@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2264572Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#781896}

third_party/blink/web_tests/LeakExpectations

@@ -29,7 +29,6 @@ crbug.com/1003224 external/wpt/clipboard-apis/async-write-image-read-image.html
 # See https://chromium-review.googlesource.com/c/chromium/src/+/2252943
 crbug.com/867532 external/wpt/workers/modules/dedicated-worker-import-data-url.any.worker.html [ Crash ]
 crbug.com/867532 external/wpt/workers/modules/dedicated-worker-import.any.worker.html [ Crash ]
-crbug.com/867532 virtual/omt-worker-fetch/external/wpt/workers/modules/dedicated-worker-import.any.worker.html [ Crash ]
 crbug.com/867532 virtual/omt-worker-fetch/http/tests/workers/worker-usecounter.html [ Crash ]
 crbug.com/867532 http/tests/workers/worker-usecounter.html [ Crash ]
 
@@ -159,6 +158,10 @@ crbug.com/1068175 [ Linux ] external/wpt/referrer-policy/gen/worker-classic.http
 # Sheriff 2020-05-06
 crbug.com/1078769 [ Linux ] external/wpt/wasm/jsapi/idlharness.any.html [ Pass Failure ]
 
+# Sheriff 2020-06-24
+# Also crbug.com/867532
+crbug.com/1098782 [ Linux ] virtual/omt-worker-fetch/external/wpt/workers/modules/dedicated-worker-import.any.worker.html [ Pass Timeout Crash ]
+
 ###########################################################################
 # WARNING: Memory leaks must be fixed asap. Sheriff is expected to revert #
 # culprit CLs instead of suppressing the leaks. If you have any question, #