central-as-beta simulations (also covers DevEditions) have revealed that browser/base/content/test/performance/browser_windowopen.js permafails for OS X DevEdition opt: https://treeherder.mozilla.org/#/jobs?repo=try&revision=fcada7dffac6f3f6ec64d86d00a565495d781996&filter-resultStatus=testfailed&filter-resultStatus=busted&filter-resultStatus=exception&filter-resultStatus=retry&filter-resultStatus=usercancel&filter-resultStatus=runnable&group_state=expanded&selectedJob=169841889 Log: https://treeherder.mozilla.org/logviewer.html#?job_id=169841889&repo=try TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_windowopen.js | unexpected changed rect: ({x1:110, x2:124, y1:46, y2:59, w:15, h:14}), window width: 1280 - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_windowopen.js | should have 0 unknown flickering areas - Got 1, expected 0

I don't think this is related to bug 1443578, it's just that somehow the reload icon height is now identified as taking 14px rather than 13px in devedition.

Somehow when rebasing the merge of browser_windowopen_reflows.js and browser_windowopen_flicker.js, the deletion of browser_windowopen_flicker.js got lost. This file is already removed from the browser.ini manifest.

Comment on attachment 8962107 [details] [diff] [review] remove unused browser_windowopen_flicker.js test file Review of attachment 8962107 [details] [diff] [review]: ----------------------------------------------------------------- Whoops - yeah, thanks for removing this.

Comment on attachment 8962106 [details] [diff] [review] Patch Review of attachment 8962106 [details] [diff] [review]: ----------------------------------------------------------------- Thanks!

Pushed by florian@queze.net: https://hg.mozilla.org/integration/mozilla-inbound/rev/2d437fbde070 accept a height of 14px for the reload icon in the browser_windowopen.js exception, r=mconley. https://hg.mozilla.org/integration/mozilla-inbound/rev/ec1fc0649f4e remove unused browser_windowopen_flicker.js test file, r=mconley.

https://hg.mozilla.org/mozilla-central/rev/2d437fbde070 https://hg.mozilla.org/mozilla-central/rev/ec1fc0649f4e

Verified fixed with latest central-as-beta simulation: https://treeherder.mozilla.org/#/jobs?repo=try&revision=a3ba256ed5f1c30dc9bf7a3c7897a8b898e4590c&filter-resultStatus=testfailed&filter-resultStatus=busted&filter-resultStatus=exception&filter-resultStatus=retry&filter-resultStatus=usercancel&filter-resultStatus=runnable&group_state=expanded