Add WPTs for 'allow-storage-access-by-user-activation' iframe sandbox (#47067)
Also moves existing test of whether the attribute value is supported into the newly created test file.
Bug: 40278734
Change-Id: I232df8dc1faa0dad0c5dddf342e64e4ba0dfbd2b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5685772
Reviewed-by: Chris Fredrickson cfredric@chromium.org
Reviewed-by: Chris Harrelson chrishtr@chromium.org
Commit-Queue: Erica Kovac ekovac@google.com
Cr-Commit-Position: refs/heads/main@{#1325508}
Co-authored-by: Erica Kovac ekovac@google.com