https://chromium-swarm-dev.appspot.com/user/task/2f4e5a06ff9ef410

[ RUN      ] AntiVirusMetricsProviderTest.GetMetricsFullName/0

e:\b\build\slave\win\build\src\chrome\browser\metrics\antivirus_metrics_provider_win_unittest.cc(60): error: Value of: defender_found

  Actual: false

Expected: true

e:\b\build\slave\win\build\src\chrome\browser\metrics\antivirus_metrics_provider_win_unittest.cc(60): error: Value of: defender_found

  Actual: false

Expected: true

[  FAILED  ] AntiVirusMetricsProviderTest.GetMetricsFullName/0, where GetParam() = false (6 ms)

Probably because Windows Defender isn't installed on these bots.