GitLab

These were removed from WebGPU because they cannot be supported
everywhere, for example on recent Qualcomm chips.

BUG=dawn:128

Change-Id: I235539916730001ad329f9ad067da7599e109360
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1760959
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688708}