Chrome uBlock detection
This page attempts to detect uBlock origin in Chrome by probing for
chrome-extension://cjpalhdlnbpafiamejdnhcphjbkeiagm/web_accessible_resources/noop.html
and observing timing differences in comparison to a fake extension.
It should work even if you have the extension disabled for the page.
This technique is impossible in firefox because firefox extensions'
web_accessible_resources are of the format
moz-extension://<extension-UUID>/images/my-image.png
where the extension-UUID is randomly generated for every browser instance in order to prevent fingerprinting.
Works as of uBlock 1.34.0 & Chrome 90.0.4430.93