commit aba318bb00c92df222ff922b4476c60e2e51d982
author Sunny Sachanandani <sunnyps@chromium.org> Wed Sep 06 20:22:22 2023
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed Sep 06 20:22:22 2023
tree 63db54ff9cb9860b9a137f9e77dccaf1cda21a55
parent 413add64bd61348332bb3f9b4a61906f1d405eda

graphite: Skip Graphite feature check early for unsupported devices

ANGLE Metal won't be enabled by default in code on M118 yet which means
it's still on a 50% Canary/Dev/Beta trial. Since Graphite requires ANGLE
Metal and fallsback to GL without it, this would lead to a difference
in populations between the experiment arms.

Unfortunately checking for ANGLE Metal is not as straightforward as
checking the feature flag, since ANGLE requires the "Mac2" GPU family
to enable its Metal backend, and the SkiaGraphite feature flag is
checked in the browser process when constructing GpuPreferences so we
can't initialize ANGLE and check which backend it used.

Therefore, this CL tries to filter out unsupported devices by using the
model identifier using this list that the ANGLE team compiled:
https://docs.google.com/spreadsheets/d/1GG74f_MTA4oAJcdM7_GxbxjUtXTpwNgptMVLNTRBVfw/edit#gid=0

Bug: 1423574
Change-Id: I0bd740386cea28945b98d378b1a4b3df8b78963f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4842780
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1193227}