To take advantage of increasing LUCI Apple Silicon Mac bots capacity, web Chrome tests should be runnable on Mac arm64 hosts.

These tests are failing because there is no arm64 Chrome cipd package available:

  failed to resolve flutter_internal/browsers/chrome/mac-arm64@version:98.1 (line 1): no such package: flutter_internal/browsers/chrome/mac-arm64

https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8805103520674940097/+/u/Chrome_and_driver_dependency/ensure_installed/stdout

Available packages:
https://chrome-infra-packages.appspot.com/p/flutter_internal/browsers/chrome/

Context at #109889 (comment)