tree 224f146ff4eb18e26305505bee97cf50d149a4a4
parent a8e7d294c626dceb6091583ff95015428ba9f94b
author Yoav Weiss <yoavweiss@chromium.org> 1635375010 -0700
committer Blink WPT Bot <blink-w3c-test-autoroller@chromium.org> 1635375815 -0700

Reland "[LCP] Add animated image support"

This is a reland of b7d510c06e0436cfb4bd7260175cd460b949225c

Original change's description:
> [LCP] Add animated image support
>
> This CL adds support for better handling of animated images in LCP:
> * A new attribute is exposing the first animated frame's paint time
> (behind a flag).
> * `startTime` is not changed.
> * The PageLoadMetrics reported for LCP are set to that first frame paint
> time for animated images (behind another flag).
> * Entries are not emitted until the image is loaded.
>
> Relevant spec issue:
> https://github.com/WICG/largest-contentful-paint/issues/83
>
> Change-Id: I6bb01eacb4f200f9c032ffcfcd9a1a41126a7773
> Bug: 1260953
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3226157
> Commit-Queue: Yoav Weiss <yoavweiss@chromium.org>
> Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#935133}

Bug: 1260953
Change-Id: I5eaaf0cfd1daa7fb905e68aed4994cb931dc7750
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3247449
Commit-Queue: Yoav Weiss <yoavweiss@chromium.org>
Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#935635}