I'm running this layout test locally (on Linux) and it is always complaining about missing results.

$ third_party/WebKit/Tools/Scripts/run-webkit-tests --no-show-results --num-retries=1 http/tests/security/resources/referrer-policy-conflicting-policies.html

(...)

Found 1 test; running 1, skipping 0.
                  
Running 1 content_shell.                                                       

[1/1] http/tests/security/resources/referrer-policy-conflicting-policies.html failed unexpectedly (-expected.txt was missing, -expected.png was missing)
                          
0 tests ran as expected, 1 didn't:

Regressions: Unexpected missing results (1)
  http/tests/security/resources/referrer-policy-conflicting-policies.html [ Missing ]