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I'm going to land a change that allows structured cloning for errors.
See [1] for the failures.

 - wpt/animation-worklet/stateful-animator.https.html expects errors
   are not serializable (see
   "state_function_returns_not_serializable").
 - wpt/html/browsers/history/the-history-interface/001.html and
   wpt/html/browsers/history/the-history-interface/002.html expect a
   DataCloneError when calling pushState with an error.
 - fast/dom/Window/window-postmessage-clone.html expects a
   DataCloneError when calling postMessage with an error.
 - fast/events/message-port-multi.html expects a DataCloneError
   when calling postMessage with an error.
 - storage/indexeddb/structured-clone.html expects a DataCloneError
   when putting an error to the storage.

All changes are expected, so I suppress all the tests here. After
landing the V8 change I will modify and re-enable them.

Also, add wpt/html/.../structuredclonse_0.html and
structured-cloning-error-stack-optional.sub.window.html because the
corresponding test changes will be merged soon.

1: https://ci.chromium.org/p/v8/builders/ci/V8-Blink%20Linux%2064/33036

Bug: 970079
Change-Id: I9b12adc81815996e1dc59b382f70ab83c4901a11
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1695541
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#676282}