Sync web-platform-tests PR 37712 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/37712
Details from upstream follow.

Noam Rosenthal <nrosenthal@chromium.org> wrote:

Initialize long task reporting for ScriptPromiseResolver

This tells the PerformanceMonitor to report longtasks
in promise chains that were not started from a callback,
e.g. fetch().then(() => {...long_task})

Bug: 1251964
Change-Id: I745780f834f9d1dfc8e8a5c8295326f06276cba6
Reviewed-on: https://chromium-review.googlesource.com/4129480
WPT-Export-Revision: 792c72bdc72e7c3659cebe5a2a83ba5dcc4ab4a9

CI Results

Ran 0 Firefox configurations based on mozilla-central, and Firefox, Chrome, and Safari on GitHub CI

Total 13 tests and 1 subtests

Status Summary

Firefox

OK : 11
FAIL : 18
ERROR : 2

Chrome

OK : 12
PASS : 15
TIMEOUT: 2
NOTRUN : 4

Safari

OK : 11
FAIL : 18
ERROR : 2

Links

GitHub PR Head
GitHub PR Base

Details

New Tests That Don't Pass

• /longtask-timing/buffered-flag.window.html [wpt.fyi]
  • PerformanceObserver with buffered flag can see previous longtask entries.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/containerNames.html [wpt.fyi]
  • Performance longtask entries in iframeWithLongNameMoreThan100CharactersSpaceHolderSpaceHolderSpaceHolderSpaceHolderSpaceHolderSpaceHolder are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/containerTypes.html [wpt.fyi]
  • Performance longtask entries in iframe are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
  • Performance longtask entries in frame are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
  • Performance longtask entries in object are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
  • Performance longtask entries in embed are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/long-microtask.window.html [wpt.fyi]
  • A short task followed by a long microtask is observable.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-attributes.html [wpt.fyi]
  • Performance longtask entries are observable.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-before-observer.window.html [wpt.fyi]
  • PerformanceObserver with buffered flag can see previous longtask entries.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-in-childiframe-crossorigin.html [wpt.fyi]
  • Performance longtask entries in cross-origin child iframe are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-in-childiframe.html [wpt.fyi]
  • Performance longtask entries in child iframe are observable in parent.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-in-externalscript.html [wpt.fyi]
  • Performance longtask entries are observable.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-in-raf.html [wpt.fyi]
  • Performance longtask entries are observable.: FAIL (Chrome: PASS, Safari: FAIL)
• /longtask-timing/longtask-promise.html [wpt.fyi]
  • Performance longtask entries after a promise: successful fetch: FAIL (Chrome: TIMEOUT, Safari: FAIL)
  • Performance longtask entries after a promise: Response.text(): FAIL (Chrome: NOTRUN, Safari: FAIL)
  • Performance longtask entries after a promise: rejected fetch: FAIL (Chrome: NOTRUN, Safari: FAIL)
  • Performance longtask entries after a promise: JSON error: FAIL (Chrome: NOTRUN, Safari: FAIL)
  • Performance longtask entries after a promise: image.decode: FAIL (Chrome: NOTRUN, Safari: FAIL)
• /longtask-timing/longtask-sync-xhr.html [wpt.fyi]: ERROR (Chrome: OK, Safari: ERROR)
• /longtask-timing/spin-eventloop-not-longtask.html [wpt.fyi]: ERROR (Chrome: OK, Safari: ERROR)

https://hg.mozilla.org/mozilla-central/rev/500899dd671f