Example flaky run: https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Linux%20CFI/11029

Flakiness dashboard:
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#builder=chromium.memory%3ALinux%20CFI&tests=WorkerDevToolsSanityTest.PauseInSharedWorkerInitialization

Stack trace:
[7121:7121:1030/143521.058777:WARNING:gaia_auth_fetcher.cc(861)] Could not reach Google Accounts servers: errno -11
../../chrome/browser/devtools/devtools_sanity_browsertest.cc:162: Failure
Expected equality of these values:
  "[OK]"
  result
    Which is: "[FAILED] Timeout exceeded: 20 sec"
Stack trace:
#0 0x000007f17f60 testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
#1 0x000007f17b3d testing::internal::AssertHelper::operator=()
#2 0x000006daee5a _ZN12_GLOBAL__N_128DispatchOnTestSuiteSkipCheckIJEEEvP14DevToolsWindowPKcDpT_