Backed out changeset 4c101dad67e0 (Bug 1742582) for causing bc test failures on browser_startup_content.js. [Backout link](https://hg.mozilla.org/integration/autoland/rev/23add1d2bd5956df71ea07cd4429575b43e500c2) [Push with failures](https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&fromchange=521231345acc273d275d98f205d61d1255fafe2c&searchStr=linux%2C18.04%2Cx64%2Cwebrender%2Copt%2Cmochitests%2Cwith%2Csoftware%2Cwebrender%2Cenabled%2Ctest-linux1804-64-qr%2Fopt-mochitest-browser-chrome-swr-e10s%2Cbc4&selectedTaskRun=RJm4SdPvTPmJchhViEfQdw.0&tochange=23add1d2bd5956df71ea07cd4429575b43e500c2) [Failure Log](https://treeherder.mozilla.org/logviewer?job_id=359311905&repo=autoland&lineNumber=3998)
Bug 1742582 Comment 3 Edit History
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Backed out changeset 4c101dad67e0 (Bug 1742582) for causing bc test failures on browser_startup_content.js. [Backout link](https://hg.mozilla.org/integration/autoland/rev/23add1d2bd5956df71ea07cd4429575b43e500c2) [Push with failures](https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&fromchange=521231345acc273d275d98f205d61d1255fafe2c&searchStr=linux%2C18.04%2Cx64%2Cwebrender%2Copt%2Cmochitests%2Cwith%2Csoftware%2Cwebrender%2Cenabled%2Ctest-linux1804-64-qr%2Fopt-mochitest-browser-chrome-swr-e10s%2Cbc4&selectedTaskRun=RJm4SdPvTPmJchhViEfQdw.0&tochange=23add1d2bd5956df71ea07cd4429575b43e500c2) [Failure Log](https://treeherder.mozilla.org/logviewer?job_id=359311905&repo=autoland&lineNumber=3998) [Failing also on Windows](https://treeherder.mozilla.org/logviewer?job_id=359312044&repo=autoland&lineNumber=14590)