https://chromium.googlesource.com/chromium/src.git/+/2e231cf052ca5e68e22baf0008ac9e5e29121707 added bunch of SetFetchCredentialsMode() calls in test (and helper) files just not to change anything, but many of them are just wrong.

Some of them are now being removed by https://chromium-review.googlesource.com/c/567690.

Check the rest carefully to remove wrong ones, otherwise incorrect failures/success caused by the wrong call might hide actual test break in the future.