Intent to ship: LargestContentfulPaint API

[Sean Feng]

Hi all,

As of Firefox 122 and an uplift to Firefox 121, I intend to turn the LargestContentfulPaint API on by default on all platforms. It has been developed behind the dom.enable_largest_contentful_paint preference. It has been shipped in Chrome since Chrome 77.

Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1866266

Standard: https://w3c.github.io/largest-contentful-paint/

This feature was previously discussed in this "Intent to prototype" thread: https://groups.google.com/a/mozilla.org/g/dev-platform/c/aL0gvvDxhwI/m/eS5Qe7TpBAAJ

Thanks,

Sean