script: Pass &mut JSContext to tasks
#41756
Merged
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This change is reviewable per commits:
In first commit we added
&mut JSContexttorun_box(it is very hard to bring&mut JSContexttoremove_script_and_layout_blocker).In second commit we pass
&mut JSContexttorun_once.In third commit we added support for accepting
&mut JSContextin closures oftask!macro and lastly we demo new macro invocations (to ensure they actually compile)Testing: Just refactor, but should be covered by WPT
Part of #40600