Update clang-format version to eb85e90350e

This updates the version of clang-format to a more recent version, as
the previous version was almost 3 years old.

R=hans@chromium.org
CC=thakis@chromium.org

Fixed: 993206
Change-Id: I2b8944197948c91287d5f49f515137445a0e7ba8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2124653
Reviewed-by: Hans Wennborg <hans@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Hans Wennborg <hans@chromium.org>
Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org>
Cr-Commit-Position: refs/heads/master@{#754431}

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