Fix existing cross-partition Blob URL revocation WPT
Bug: 351867688
Change-Id: Iae8501570eb465a00cada45f6f9fc1726ef8b779
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5730354
Reviewed-by: Kyra Seevers kyraseevers@chromium.org
Commit-Queue: Kyra Seevers kyraseevers@chromium.org
Reviewed-by: Andrew Williams awillia@chromium.org
Auto-Submit: Janice Liu janiceliu@chromium.org
Cr-Commit-Position: refs/heads/main@{#1333764}