Add a context filter variant dimension to existing WPT canvas tests
This effectively just renames existing tests, stating that they do not
use a context filter. The tests are otherwise untouched. A follow-up CL
will add tests in this new variant dimension to validate context
filters. Splitting this in two CLs makes them smaller and easier to
review.
Bug: 40249439
Change-Id: I9d0361138fb73ab6375259d86f1af8ce50d560ff
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5786294
Reviewed-by: Andres Ricardo Perez andresrperez@chromium.org
Commit-Queue: Jean-Philippe Gravel jpgravel@chromium.org
Cr-Commit-Position: refs/heads/main@{#1344122}