Enable requestStorageAccess.sub.window.html test on Mac

Enable requestStorageAccess.sub.window.html test on Mac because two
tests virtual/storage-access-api/external/wpt/storage-access-api/requestStorageAccess.sub.window.html
external/wpt/storage-access-api/requestStorageAccess.sub.window.html
failed on
https://ci.chromium.org/p/chromium/builders/ci/Mac10.11%20Tests, but I
reverted the expectation file change.

TBR=brandm@microsoft.com

Bug: 1053903
Change-Id: I348c8a387346ee2a4e8980a2fe6d84e4e5272232
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2068253
Commit-Queue: Lan Wei <lanwei@chromium.org>
Reviewed-by: Lan Wei <lanwei@chromium.org>
Auto-Submit: Lan Wei <lanwei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743697}

third_party/blink/web_tests/TestExpectations

@@ -7488,8 +7488,6 @@ crbug.com/1049607 [ Win ] external/wpt/html/semantics/selectors/pseudo-classes/l
 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 ]
-crbug.com/1054577 [ Mac ] virtual/storage-access-api/external/wpt/storage-access-api/requestStorageAccess.sub.window.html [ Pass Failure ]
-crbug.com/1054577 [ Mac ] external/wpt/storage-access-api/requestStorageAccess.sub.window.html [ Pass Failure ]
 
 # Sheriff 2020-02-07