Re-enable flaky test after fix.

TBR=drott@chromium.org
Bug: 1012600

Change-Id: If44af5d9f9428c9bd453d064bc4c88916685f09b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1860276
Commit-Queue: Chris Harrelson <chrishtr@chromium.org>
Reviewed-by: Chris Harrelson <chrishtr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#705717}

third_party/blink/web_tests/TestExpectations

@@ -2682,11 +2682,11 @@ crbug.com/1002514 external/wpt/web-share/share-sharePromise-internal-slot.https.
 # Subgrid is not implemented yet
 crbug.com/618969 external/wpt/css/css-grid/subgrid/ [ Skip ]
 
-crbug.com/1012600 virtual/threaded/external/wpt/css/css-animations/animation-opacity-pause-and-set-time.html [ Failure Pass ]
 crbug.com/1012627 [ Win7 ] external/wpt/css/css-text/line-breaking/line-breaking-021.html [ Failure ]
 
 # ====== New tests from wpt-importer added here ======
 crbug.com/626703 [ Win10 ] virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/update-bytecheck.https.html [ Timeout ]
+crbug.com/626703 [ Retina ] virtual/threaded/external/wpt/css/css-animations/animation-opacity-pause-and-set-time.html [ Failure ]
 crbug.com/626703 [ Mac ] external/wpt/html/rendering/non-replaced-elements/form-controls/select-sizing-001.html [ Failure ]
 crbug.com/626703 [ Linux ] external/wpt/css/css-align/baseline-rules/grid-item-input-type-number.html [ Failure ]
 crbug.com/626703 [ Mac ] external/wpt/css/css-align/baseline-rules/grid-item-input-type-number.html [ Failure ]