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Feature-Policy-Report-Only: which types are supported? #305

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gi11es opened this issue May 1, 2019 · 2 comments
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Feature-Policy-Report-Only: which types are supported? #305

gi11es opened this issue May 1, 2019 · 2 comments
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feature question Questions and issues around specific policy-controlled features

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@gi11es
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gi11es commented May 1, 2019

In Chrome 74 with the origin trial sync-xhr works, but for example is I try to use document-write or unsized-media, I get a developer console error:

Error with Feature-Policy-Report-Only header: Unrecognized feature: 'document-write'.
Error with Feature-Policy-Report-Only header: Unrecognized feature: 'unsized-media'.

I can't find a list of which feature policy types are currently supported in report-only mode.
@gi11es gi11es changed the title Feature-Policy-Report-Only: what types are supported? Feature-Policy-Report-Only: which types are supported? May 1, 2019
wmfgerrit pushed a commit to wikimedia/operations-mediawiki-config that referenced this issue May 1, 2019
Remove unsupported wgFeaturePolicyReportOnly types
461ae16 
It appears that Chrome 74 still doesn't support those

Files an upstream bug about the lack of clarity
on what is supported:

w3c/webappsec-permissions-policy#305

Bug: T209572
Change-Id: Ib953ddf3a234ce7d8cab9948707ee90639e43412
@pabrai pabrai added question feature question Questions and issues around specific policy-controlled features and removed question labels May 8, 2019
@maxtruxa
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Implemented feature policies are already documented here. The values described are valid for Feature-Policy as well as Feature-Policy-Report-Only.

Note that the authoritative list of which policies are actually implemented is always the source code (permalink).

The feature policies document-write as well as unsized-media are hidden behind the Chrome/Chromium flag --enable-blink-features=ExperimentalProductivityFeatures.

@gi11es
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gi11es commented May 16, 2019

Thanks!

@gi11es gi11es closed this as completed May 16, 2019
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