I am ATM optimizing a very old website and try to reduce mozAfterPaint
events, to get an improved rendering result.
At the start there are so many events, you cannot count them. there are so
many green lines inside the network graph that I cannot see if changes
improve things or make it even worse.
it would be nice if the tooltip would show the number/count of
mozAfterPaints events which occured, additionaly to the already shown