New `marker` field for the Self-Profiling API

[captainbrosset]

Specification

WICG/js-self-profiling#89

Description

This feature adds an optional marker field to the Self-Profiling API (see existing feature for the API) which lets developers identify the type of browser activity running when a sample was taken (script, gc, style, layout, paint, etc.)

Documentation

https://github.com/WICG/js-self-profiling/blob/main/markers.md

Browser support

Being implemented in Chromium: https://chromium-review.googlesource.com/c/chromium/src/+/6012522

[ddbeck]

Thanks for filing this, @captainbrosset. I marked this as an early feature because I can't really tell if this is shipping or not and I'm presuming not. I couldn't find a Chrome status entry. Though the linked commit seems to have shipped, I don't know if it's possibly gated behind a flag or similar. Do you have any information on the status of this feature?

[captainbrosset]

Here is the Chrome status entry: https://chromestatus.com/feature/5201297767792640
This was implemented in Chromium a long time ago, possibly partially, or possibly the spec has changed since then.
@victorhuangwq can you help us understand the status of the feature in Chromium please?