chromium/third_party/blink/web_tests/http/tests/inspector-protocol/network/resources/source.map.php

<?php
header('Content-Type: application/json');

echo '{"version":3,"file":"source.js","sourceRoot":"","sources":["source.ts"],"names":[],"mappings":"AAAA,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAA"}'
?>