Intent to Ship: CSS View Transitions L1

[Emilio Cobos Álvarez]

Hi,

As of today, in bug 1985809, I intend to turn CSS View Transitions (L1)
on by default on all platforms.

It's been developed behind the dom.viewTransitions.enabled preference,
and it's been on by default on Nightly for quite a while already.

Our implementation is solid and has been fuzzed substantially, and the
remaining issues on the interop dashboard are being worked on, but we
haven't found any real content depending on some of these edge cases, so
I don't think they should block shipping.

Standard: https://drafts.csswg.org/css-view-transitions-1/

This feature was discussed in this "Intent to prototype" thread:
https://groups.google.com/a/mozilla.org/g/dev-platform/c/l4g8JgaBPPw/m/M3n7tAaFAAAJ

Let me know if there's any concern with proceeding.

Cheers,

-- Emilio