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There exist separate tolerances for desktop ARM64 (Windows and Fuchsia)
already. They are needed for macOS as well.

Bug: 1128443
Change-Id: I93b14ea6acf26c1d1aea6748134988690fa9990f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2424712Reviewed-by: Sunny Sachanandani <sunnyps@chromium.org>
Commit-Queue: ccameron <ccameron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809567}