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This is a follow-up to [1] that fixes one compilation issue and also
renames the classes and files so they would match the purpose better.

No changes to functionality are intended.

[1] https://crrev.com/c/2289772

Bug: 990756
Change-Id: Ifffe052bff2d6bfcad81ce5fe38e6e5ad37dcb8b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2317185
Auto-Submit: Alexander Dunaev <adunaev@igalia.com>
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#791382}