Created attachment 682698 [details] [diff] [review] fixes so far (still has races) The Web Worker error propagation tests from bug 595394 were disabled in bug 692605 for intermittent failures. The infrastructure I just landed in bug 663291 (hopefully it sticks this time) should make it possible to do these tests robustly, but I am not familiar enough with workers to figure out how. I'm attaching a patch that revises these tests to use the bug 663291 infrastructure, and I hope someone can take it from there.
Attachment #682698 - Flags: review-
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