On: WebP: The WebPage Compression Format

[lxgr]

I was wondering that too, but that dictionary itself compresses down to 29 KB (using regular old gzip), so it seems pretty lightweight to include even if it were hard/annoying to precompute at runtime or install time.

[lifthrasiir → lxgr]

Once installed it will occupy 128 KiB of data though, so it might be still relevant for the Chromium team.