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- Reorder overrides that are incorrectly grouped.
- Separate a non-overridden method from the overrides group.
- Reorder an enum declaration and mention why it is public.

Change-Id: I9d359631c8e8be21780a656866a91fac6e62d3c2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363634Reviewed-by: K. Moon <kmoon@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799338}