Compression Streams: zstd support

[saschanaz]

WebKittens

@stwrt (who implemented brotli support in WebKit/WebKit@0d3451c)?

Title of the proposal

Compression

URL to the spec

https://compression.spec.whatwg.org/

URL to the spec's repository

https://github.com/whatwg/compression/

Issue Tracker URL

https://github.com/whatwg/compression/issues/ (whatwg/compression#54 specifically)

Explainer URL

No response

TAG Design Review URL

No response

Mozilla standards-positions issue URL

No response

WebKit Bugzilla URL

No response

Radar URL

No response

Description

Mozilla implemented only the decoder part behind dom.compression_streams.zstd.enabled for Gecko-internal use case in https://bugzilla.mozilla.org/show_bug.cgi?id=1947431.