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This was purposefully skipped on previous CL that migrated this folder
to JS modules, to make reviewing easier.

Fixed: 1149868
Change-Id: I678d88e58a9e1412c0cda1fb9575b83ecfe431bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2553288
Auto-Submit: dpapad <dpapad@chromium.org>
Reviewed-by: John Lee <johntlee@chromium.org>
Commit-Queue: John Lee <johntlee@chromium.org>
Commit-Queue: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#830271}