[Partitioned Popins] WPT Fixes (#47716)
Just some minor fixes and adding owners.
Explainer: https://explainers-by-googlers.github.io/partitioned-popins/
I2P: https://groups.google.com/a/chromium.org/g/blink-dev/c/ApU_zUmpQ2g/
Bug: 340606651
Change-Id: I12905a1a2fe66eabdf06659e0e4053c6d0ea568c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5803943
Commit-Queue: Ari Chivukula arichiv@chromium.org
Reviewed-by: Mike Taylor miketaylr@chromium.org
Cr-Commit-Position: refs/heads/main@{#1344840}
Co-authored-by: Ari Chivukula arichiv@chromium.org