Privacy 2024 - privacy links optimized + cleanup

[max-ostapenko]

• removed GPC client-side detection, doesn't make sense in lab tests. Use .well-known/gpc.json instead
• removed DNT client-side detection, doesn't make sense in lab tests
• removed FLoC, long closed origin trial
• updated privacy policy links tracking (languages extended, matching performance)
• removed Ads Transparency Spotlight schema, deprecated

---

Test websites:

• https://www.adobe.com
• https://www.amazon.com
• https://www.google.com

[github-actions]

Custom metrics for https://almanac.httparchive.org/en/2022/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240509_4D_7

Custom metrics for https://www.adobe.com

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240509_8Y_8
Changed custom metrics values:

{
    "_privacy": {
        "privacy_wording_links": [
            {
                "text": "Privacy"
            }
        ],
        "iab_tcf_v1": {
            "present": false,
            "data": null,
            "compliant_setup": null
        },
        "iab_tcf_v2": {
            "present": false,
            "data": null,
            "compliant_setup": null
        },
        "iab_usp": {
            "present": false,
            "privacy_string": null
        },
        "document_permissionsPolicy": false,
        "document_featurePolicy": true,
        "referrerPolicy": {
            "entire_document_policy": null,
            "individual_requests": null,
            "link_relations": null
        },
        "media_devices": {
            "navigator_mediaDevices_enumerateDevices": false,
            "navigator_mediaDevices_getUserMedia": false,
            "navigator_mediaDevices_getDisplayMedia": false
        },
        "geolocation": {
            "navigator_geolocation_getCurrentPosition": false,
            "navigator_geolocation_watchPosition": false
        }
    }
}