Slightly modifying privacy-sandbox.js and how featurePolicies are checked

[yohhaan]

Slightly modifying privacy-sandbox.js for completeness:

• in Adding Privacy Sandbox APIs #129, because some feature policies always returned true on the tests it was decided to remove them from any testing, this is not always the case (see https://www.lireo.com/): website owners can decide to block access to Privacy Sandbox APIs to embedded 3rd parties
• this PR adds back the check for the different feature policies, but only record in custom metric when it is not allowed (along with the AllowList for that feature)
• also adding a try/catch error around APIs detection just in case.

Note: the modification on feature policies is for completeness, this does not require stopping the June crawl or anything like that, just re-adding it for crawls in the future. Thanks!

---

Test websites:

• https://example.com/
• https://www.lireo.com/
• https://www.operafootball.com/
• https://floc.glitch.me/
• https://pets-animals-pets-cats.glitch.me/
• https://tennis-tennis.glitch.me/
• https://protected-audience-demo-advertiser.web.app/
• https://protected-audience-demo-publisher.web.app/
• https://fedcm-rp-demo.glitch.me/
• https://fedcm-idp-demo.glitch.me/

[github-actions]

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

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_1V_19

Custom metrics for https://example.com/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_AA_1A
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": []
    }
}

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

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_HR_1B
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "browsing-topics": []
            },
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": []
    }
}

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

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_MH_1C
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "securepubads.g.doubleclick.net": [
                "runAdAuction",
                "navigator.userAgentData.getHighEntropyValues",
                "fencedFrameJs",
                "sec-browsing-topics|false",
                "attribution-reporting-eligible"
            ],
            "pagead2.googlesyndication.com": [
                "runAdAuction",
                "navigator.userAgentData.getHighEntropyValues",
                "joinAdInterestGroup"
            ],
            "googleads.g.doubleclick.net": [
                "sec-browsing-topics|true",
                "sec-browsing-topics|false",
                "navigator.userAgentData.getHighEntropyValues"
            ],
            "fundingchoicesmessages.google.com": [
                "accept-ch|Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Full-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Model, Sec-CH-UA-WoW64, Sec-CH-UA-Form-Factor, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version"
            ],
            "www.googletagmanager.com": [
                "joinAdInterestGroup",
                "navigator.userAgentData.getHighEntropyValues"
            ],
            "cdn.ampproject.org": [
                "reportWin"
            ],
            "www.gstatic.com": [
                "navigator.userAgentData.getHighEntropyValues"
            ],
            "www.googleadservices.com": [
                "attribution-reporting-eligible",
                "attribution-reporting-register-source|destination=https://yahoo.com|epsilon=undefined",
                "attribution-reporting-register-source|destination=https://fubo.tv|epsilon=undefined",
                "privateAggregation.enableDebugMode"
            ],
            "yandex.ru": [
                "accept-ch|Sec-CH-UA-Platform-Version, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA, Sec-CH-UA-Full-Version-List, Sec-CH-UA-WoW64, Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Platform, Sec-CH-UA-Full-Version, Viewport-Width, DPR, Device-Memory, RTT, Downlink, ECT"
            ]
        }
    }
}

Custom metrics for https://floc.glitch.me/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_6Y_1D
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "floc.glitch.me": [
                "document.interestCohort"
            ]
        }
    }
}

Custom metrics for https://pets-animals-pets-cats.glitch.me/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_BH_1E
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "pets-animals-pets-cats.glitch.me": [
                "document.browsingTopics|false"
            ],
            "topics-demo.glitch.me": [
                "document.browsingTopics|false"
            ]
        }
    }
}

Custom metrics for https://tennis-tennis.glitch.me/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_AJ_1F
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "tennis-tennis.glitch.me": [
                "document.browsingTopics|true"
            ],
            "topics-server.glitch.me": [
                "sec-browsing-topics|false"
            ]
        }
    }
}

Custom metrics for https://protected-audience-demo-advertiser.web.app/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_T5_1G
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "protected-audience-demo-dsp.web.app": [
                "joinAdInterestGroup"
            ]
        }
    }
}

Custom metrics for https://protected-audience-demo-publisher.web.app/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_ZA_1H
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "protected-audience-demo-ssp.web.app": [
                "runAdAuction"
            ]
        }
    }
}

Custom metrics for https://fedcm-rp-demo.glitch.me/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_KW_1J
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "fedcm-idp-demo.glitch.me": [
                "navigator.credentials.get"
            ]
        }
    }
}

Custom metrics for https://fedcm-idp-demo.glitch.me/

WPT test run results: http://webpagetest.httparchive.org/results.php?test=240612_JE_1K
Changed custom metrics values:

{
    "_privacy-sandbox": {
        "featuresDisabled": [
            {
                "top-level-storage-access": []
            }
        ],
        "privacySandBoxAPIUsage": {
            "fedcm-idp-demo.glitch.me": [
                "navigator.credentials.get",
                "IdentityProvider.getUserInfo"
            ]
        }
    }
}