The basics for this method have been implemented for the remote protocol, which simply sets the internal flag to disabled. Maybe that is all what we should do here, and simply close this bug? Or shall we wait until the necessary event listeners have been removed?

Andreas, what is your take on that?

Oh, and Puppeteer doesn't use this method at all. Instead it leaks all the registered event listeners for each and every instance of the Page class. So it's nothing we would need for the alpha release.

As discussed with Andreas we have the implementation done for Performance.disable() and this CDP endpoint can be called. Handling (registering, unregistering) of events will be handled on their own meta bugs.

The implementation was done for Firefox 67 on bug 1533682.