GitLab

Updates the GPU documentation on performing a driver/OS upgrade to use
the swarming OR operator instead of the synthetic swarming dimensions.

Bug: 920665
Change-Id: Id510e75e34b577282ad7b45d1b1282c135e00288
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2212922
Auto-Submit: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771202}