It still exists, but now “ad blockers” can’t use the blocking API to record and forward metrics on hits. Ad blockers don’t even need the webRequest and webRequestBlocking permissions anymore.
Now, if an ad blocker has webRequest permissions it’s a red flag.
With Manifest v3, let's say I'm an ad blocker and I want to get access to metrics not to violate privacy, but just to report them to the user (X domains blocked, Y out of Z requests blocked, etc). How would I get access to those metrics?
Now, if an ad blocker has webRequest permissions it’s a red flag.
For example https://developer.chrome.com/docs/extensions/develop/concept... uses webRequest to send telemetry back to some remote server.