Element timing/LCP: Replace TAO restriction with coarsening

[noamr]

Request for Mozilla Position on an Emerging Web Specification

• Specification title: Element timing/LCP: Replace TAO restriction with coarsening
• Specification or proposal URL (if available): https://w3c.github.io/largest-contentful-paint/
• Explainer URL (if available): https://github.com/w3c/paint-timing/blob/main/presentation-timestamps.md and this document.
• Proposal author(s) (@-mention GitHub accounts): @noamr @mmocny
• Caniuse.com URL (optional):
• Bugzilla URL (optional):
• Mozillians who can provide input (optional): @BasMoz @sefeng211
• WebKit standards-position:

Other information

See also #1110
This has been discussed at the WebPerfWG, see minutes