Reland "arc: [25/N] Move //{ => ash}/components/arc/mojom : unit tests and small mojom targets"

This is a reland of aead9e9600dbce33d3bf0695d5d1b2b27e28bbf3

What's changed in reland:
Fixed a few places of path updates.
Less redirection in ash/components/arc/mojom/OWNERS.

Original change's description:
> arc: [25/N] Move //{ => ash}/components/arc/mojom : unit tests and small
> mojom targets
>
> This CL moves smaller mojom targets and unit tests.
> { => ash}/components/arc/mojom (partially)
>
> Bigger mojom targets will be moved in separate CLs.
>
> This is part of the LaCrOs directory migration
> https://docs.google.com/document/d/1g-98HpzA8XcoGBWUv1gQNr4rbnD5yfvbtYZyPDDbkaE
>
> Bug: b:129295708
> Test: CI
> Change-Id: Ic4bee431e05dbc8d635d71a9e76e5f4d539eb592
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3296857
> Commit-Queue: Yao Li <yaohuali@google.com>
> Reviewed-by: James Cook <jamescook@chromium.org>
> Owners-Override: James Cook <jamescook@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#944608}

Bug: b:129295708
Change-Id: Iad7fb164356c15ced93750f171ea76f8391b42f3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3298686
Commit-Queue: Yao Li <yaohuali@google.com>
Reviewed-by: James Cook <jamescook@chromium.org>
Owners-Override: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/main@{#946150}
NOKEYCHECK=True
GitOrigin-RevId: 2b46d6f4acfd72b853208f7aa7ed35c9d080b320
13 files changed