IDB WPTs: Combine idbcursor_advance_index tests. Run them on workers
This change combines various idbcursor_advance_index WPTs into a single
file and extends them to also run in dedicated, shared, and service
worker environments.
Bug: 41455766
Change-Id: I521221cb7d77aa95af2a74a7476d7c4a2a95394f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5581404
Reviewed-by: Evan Stade estade@chromium.org
Commit-Queue: Rahul Singh rahsin@microsoft.com
Cr-Commit-Position: refs/heads/main@{#1313697}