They already had a very similar feature. _15 years ago_ with SDCH that got removed in 2018-- https://chromestatus.com/feature/5763176272494592 https://chromesta

They already had a very similar feature. _15 years ago_ with SDCH that got removed in 2018-- https://chromestatus.com/feature/5763176272494592 https://chromestatus.com/feature/5763176272494592 https://daniel.haxx.se/blog/2008/09/09/shared-dictionary-compression-over-http/ https://daniel.haxx.se/blog/2008/09/09/shared-dictionary-com... Presumably they have some reason to think that this will be useful now when it wasn't before?