The changes landed in r251594 caused the following API test to timeout: TestWebKitAPI.ServiceWorkers.FetchAfterRestoreFromDisk Steps to Reproduce: Issue reproduces with the following command using r251594, but does not timeout when run on r251593. run-api-tests --ios-simulator TestWebKitAPI.ServiceWorkers.FetchAfterRestoreFromDisk TestWebKitAPI.ServiceWorkers.FetchAfterRestoreFromDisk Timeout Ran 1 tests of 1 with 0 successful ------------------------------ Test suite failed Timeout TestWebKitAPI.ServiceWorkers.FetchAfterRestoreFromDisk ERROR: Invalid Content-Type string '' ./platform/network/ParsedContentType.cpp(231) : bool WebCore::ParsedContentType::parseContentType(WebCore::Mode) ERROR: Invalid Content-Type string '' ./platform/network/ParsedContentType.cpp(231) : bool WebCore::ParsedContentType::parseContentType(WebCore::Mode)
<rdar://problem/56689789>
This causing patch was rolled out in https://trac.webkit.org/changeset/251710/webkit