To roll the WebGPU CTS forward to the latest top-of-tree, use roll_webgpu_cts.sh. This does not regenerate wpt_internal/webgpu/cts.html.

To regenerate wpt_internal/webgpu/cts.html (after a roll, or after changes in WebGPUExpectations), run regenerate_internal_cts_html.sh.

See the comments in those scripts for more info.