WPT import https://crrev.com/c/1379391 introduced new failures in external/wpt/webxr:

List of new failures:
external/wpt/webxr/idlharness.https.window.html new failing tests: https://crrev.com/c/1379391/4/third_party/blink/web_tests/external/wpt/webxr/idlharness.https.window-expected.txt

This import contains upstream changes from 81f23a9e43fc5ae0a06b59609c88959a7363c66a to 6ac8aafecc3aa1f51ef1ab6cdebc1560ec883601:
Update interfaces/webxr.idl (#14553): https://github.com/web-platform-tests/wpt/commit/6ac8aafecc3aa1f51ef1ab6cdebc1560ec883601