Build is broken:
webkit_tests http/tests/fetch/serviceworker/fetch-base-https-other-https.html
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=http%2Ftests%2Ffetch%2Fserviceworker%2Ffetch-base-https-other-https.html&testType=webkit_tests
webkit_tests http/tests/fetch/serviceworker/fetch.html
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=http%2Ftests%2Ffetch%2Fserviceworker%2Ffetch.html&testType=webkit_tests

Revision range:
chromium 381442 : 382441

Failing builders:
WebKit Mac non-Oilpan (dbg): https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Mac%20non-Oilpan%20(dbg)