[Sheriff] Update TestExpectations

Mark the following as flaky on all platforms:
external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html
virtual/not-site-per-process/external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html

Bug: 1027434
Change-Id: Ifbaf02b9d45955347aeb1d808d4cdff8a603001d
TBR: avi@chromium.org
No-Try: True
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1944678Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720470}

third_party/blink/web_tests/TestExpectations

@@ -5979,7 +5979,8 @@ crbug.com/1027436 [ Mac ] inspector-protocol/heap-profiler/heap-snapshot-with-de
 crbug.com/1019079 virtual/gpu/fast/canvas/OffscreenCanvas-placeholder-createImageBitmap.html [ Pass Failure ]
 crbug.com/1019079 fast/canvas/OffscreenCanvas-placeholder-createImageBitmap.html [ Pass Failure ]
 crbug.com/1027435 [ Mac ] external/wpt/html/cross-origin-opener-policy/popup-none.https.html [ Pass Timeout ]
-crbug.com/1027434 [ Mac ] external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html [ Pass Timeout ]
+crbug.com/1027434 external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html [ Pass Timeout ]
+crbug.com/1027434 virtual/not-site-per-process/external/wpt/html/browsers/origin/cross-origin-objects/cross-origin-objects.html [ Pass Timeout ]
 
 # Sheriff 2019-12-02
 crbug.com/1029713 external/wpt/cookie-store/cookieStoreManager_getSubscriptions_multiple.tentative.https.any.html [ Pass Failure ]