Remove experimental document-write policy.
This document policy (previously feature policy) has been in an
experimental state for several years, and there are no current plans to
ship it. Removing the feature to reduce the maintenance burden of unused
code.
Bug: 340920459
Change-Id: Id77759fa482ea8a693554a9ecfdc792c85470a68
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5543562
Reviewed-by: Ken Buchanan kenrb@chromium.org
Commit-Queue: Ian Clelland iclelland@chromium.org
Reviewed-by: Rick Byers rbyers@chromium.org
Cr-Commit-Position: refs/heads/main@{#1302748}