Revert "Consolidate Permissions Policy owners"

This reverts commit 18ad967c1e4b425d6edfd163fddf3cf64afe7a1a.

Reason for revert: causing failures in
https://ci.chromium.org/ui/p/chromium/builders/ci/linux-presubmit/23714/blamelist

Original change's description:
> Consolidate Permissions Policy owners
>
> This is in preparation of moving parts of Permissions Policy code out of
> Blink, making sure that owners are not scattered around the codebase.
>
> Bug: 382291442
> Change-Id: I6af0be140180af97f601fba4c3b208e5518e2cf6
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6182329
> Commit-Queue: Sandor «Alex» Major <sandormajor@chromium.org>
> Reviewed-by: Ari Chivukula <arichiv@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#1408076}

Bug: 382291442
Change-Id: Iec57b82fdc4e6e4633c43c93357781ae4887dd32
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6181157
Auto-Submit: Nicolás Peña <npm@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Nicolás Peña <npm@chromium.org>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#1408149}