chromium/tools/mb/mb_config_expectations/chromium.chromiumos.json

{
  "linux-ash-chromium-generator-rel": {
    "gn_args": {
      "dcheck_always_on": false,
      "ffmpeg_branding": "ChromeOS",
      "is_component_build": false,
      "is_debug": false,
      "proprietary_codecs": true,
      "target_os": "chromeos",
      "use_cups": true,
      "use_remoteexec": true
    }
  }
}