BTW I have removed the use of `XPCOMUtils` with small vanilla JS. This is the artifact test run on top of bug 1520350. https://treeherder.mozilla.org/#/jobs?repo=try&author=timdream%40gmail.com&selectedJob=222567906
Bug 1518932 Comment 26 Edit History
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BTW I have removed the use of `XPCOMUtils` with small vanilla JS. This is the artifact build test run on top of bug 1520350. https://treeherder.mozilla.org/#/jobs?repo=try&author=timdream%40gmail.com&selectedJob=222567906