I noticed a few minor issues while looking at this test. I also wrote a few refactorings to make it easier to what is understanding with the asynchrony, but I don't know if it is worth landing those, so I'll skip them for now.
Created attachment 8728705 [details] [diff] [review] part 1 - Remove a leftover use of clearUserPref. Also, remove some trailing whitespace. try: https://treeherder.mozilla.org/#/jobs?repo=try&revision=ed14a344e2b2
Attachment #8728705 - Flags: review?(masayuki)
Created attachment 8728706 [details] [diff] [review] part 2 - Remove extraneous argument to sendWheelAndWait. Bug 1140293 changed hitEventLoop calls to sendWheelAndWait but did not remove the extra argument.
Attachment #8728706 - Flags: review?(masayuki)
Attachment #8728705 - Flags: review?(masayuki) → review+
Attachment #8728706 - Flags: review?(masayuki) → review+
Status: NEW → RESOLVED
Last Resolved: 2 years ago
status-firefox48: affected → fixed
Resolution: --- → FIXED
Target Milestone: --- → mozilla48
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