Remove cookie page from settings: brave://settings/cookies/detail?site=XYZ

[ShivanKaul]

Description

Upstream Chromium has removed the cookie page which let you view all cookies for a site. We brought it back briefly by disabling the kDeprecateCookiesTreeModel flag in #37030, but CR 125 immediately removed that flag which caused the page to be broken again.

Note that users can already view cookies by going to a page and seeing/editing cookies via DevTools => Application => Cookies. That workaround doesn't address the use-case of seeing cookies for a page without actually visiting it, but if we want to address that use-case it needs to be a whole new feature; patching and tweaking upstream code is too brittle at this point. In the meantime this page is actively broken in Release and we should fix ASAP: #38578.

Steps to reproduce

1. Go to brave://settings/content/all
2. Select a site e.g. github.com (brave://settings/content/siteDetails?site=https%3A%2F%2Fgithub.com%2F)
3. Go to Cookies and Site Data (brave://settings/cookies/detail?site=github.com)

Actual result

Expected result

1. There should be no Cookies and Site Data under the Site Details page for a site.
2. brave://settings/cookies/detail?site=github.com page should not exist.

Reproduces how often

Easily reproduced

Brave version (brave://version info)

1.66.118 Chromium: 125.0.6422.147 (Official Build) (arm64)

Channel information

• release (stable)
• beta
• nightly

Reproducibility

• with Brave Shields disabled
• with Brave Rewards disabled
• in the latest version of Chrome

Miscellaneous information

No response

[emerick]

brave/brave-core#17746 would essentially need to be reverted (we'd have to be careful of course; it's probably not quite a direct revert).

[iefremov]

There is a PR by a volunteer, can somebody review? @emerick @petemill brave/brave-core#24256