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Automatic update from web-platform-tests Rework load/error event dispatch for <use> elements The way events are dispatch (for <use> 'load' of external resources) is racy, since the resource reference can change from "external" to "local" in the space between the resource finished loading and the event was dispatched. Instead post 'load' (and 'error') events as cancellable tasks, and then cancel the event task if the target reference changes before the event has been dispatched. This somewhat matches similar types of loading sequences. Fixed: 1130925 Change-Id: Icd4e89a0288ab0ed5e4c7ee0fe218ee30329d477 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4047289 Auto-Submit: Fredrik Söderquist <fs@opera.com> Reviewed-by: Philip Rogers <pdr@chromium.org> Commit-Queue: Philip Rogers <pdr@chromium.org> Cr-Commit-Position: refs/heads/main@{#1081477} -- wpt-commits: 6f1c494b9a42cfe0703bcfa84d07ccdba82b7152 wpt-pr: 37353
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