Google can totally explain why Chromium browsers quietly tell only its websites about your CPU, GPU usage
It's time for Google being Google, this time by using an undocumented APIs to track resource usage when using Chrome.
When visiting a *.google.com domain, the Google site can use the API to query the real-time CPU, GPU, and memory usage of your browser, as well as info about the processor you're using, so that whatever service is being provided - such as video-conferencing with Google Meet - could, for instance, be optimized and tweaked so that it doesn't overly tax your computer. The functionality is implemented as an API provided by an extension baked into Chromium - the browser brains primarily developed by Google and used in Chrome, Edge, Opera, Brave, and others.
Brandon Vigliarolo at The Register
The original goal of the API was to give Google's various video chat services - I've lost count - the ability to optimise themselves based on the available system resources. Crucially, though, this API is only available to Google's domains, and other, competing services cannot make use of it. This is in clear violation of the European Union's Digital Markets Act, and with Chrome being by far the most popular browser in the world, and thus a clear gatekeeper, the European Commission really should have something to say about this. For its part, Google told The Register it claims to comply with the DMA, so we might see a change to this API soon.
Aside from optimising video chat performance, the API, which is baked into a non-removable extension, also tracks performance issues and crashes and reports these back to Google. This second use, too, is at its core not a bad thing - especially if users are given the option to opt out of such crash analytics. Still, it seems odd to use an undocumented API for something like this, but I'm not a developer so what do I know. Mind you, other Chromium-based browsers also report this data back to Google, which is wild when you think about it.
Normally I would suggest people switch to Firefox, but I've got some choice words for Firefox and Mozilla, too, later today.