This is because the static variable for proxy settings was replaced by a NeverDestroyed, but the function is not returning a reference, but a copy. This is causing several unit tests to fail.
Created attachment 344409 [details] Patch
Comment on attachment 344409 [details] Patch Attachment 344409 [details] did not pass mac-ews (mac): Output: https://webkit-queues.webkit.org/results/8454537 New failing tests: media/media-fullscreen-return-to-inline.html
Created attachment 344415 [details] Archive of layout-test-results from ews102 for mac-sierra The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews102 Port: mac-sierra Platform: Mac OS X 10.12.6
Comment on attachment 344409 [details] Patch r=me, nice!
Comment on attachment 344409 [details] Patch Wow, good catch \o/
Comment on attachment 344409 [details] Patch Clearing flags on attachment: 344409 Committed r233575: <https://trac.webkit.org/changeset/233575>
All reviewed patches have been landed. Closing bug.