Unblock wpt import by adding expectations for flaky tests

Bug: 1054577
Change-Id: Id016a5d8f3f511851dfd91861b2ec42f03068e14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067638
Commit-Queue: Luke Z <lpz@chromium.org>
Commit-Queue: Robert Ma <robertma@chromium.org>
Auto-Submit: Luke Z <lpz@chromium.org>
Reviewed-by: Robert Ma <robertma@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743302}

third_party/blink/web_tests/TestExpectations

@@ -7468,6 +7468,9 @@ crbug.com/1049607 virtual/omt-worker-fetch/external/wpt/fetch/api/response/respo
 crbug.com/1049607 [ Linux ] external/wpt/js-self-profiling/idlharness.any.html [ Pass Failure ]
 crbug.com/1049607 [ Linux ] external/wpt/js-self-profiling/idlharness.any.worker.html [ Pass Failure ]
 crbug.com/1049607 [ Win ] external/wpt/html/semantics/selectors/pseudo-classes/link.html [ Pass Failure ]
+crbug.com/1054577 [ Linux ] virtual/storage-access-api/external/wpt/storage-access-api/requestStorageAccess.sub.window.html [ Pass Failure ]
+crbug.com/1054577 [ Win ] virtual/storage-access-api/external/wpt/storage-access-api/requestStorageAccess.sub.window.html [ Pass Failure ]
+crbug.com/1054577 [ Mac ] external/wpt/media-source/mediasource-detach.html [ Pass Failure ]
 
 # Sheriff 2020-02-07