Note though it's not `console.copy` but `copy`; it's a part of Command Line API [1] which is not the same as Console API [2] - command line API is not accessible from JS of the page.
in Aurora (Fx39), profile/time tools create profiles and marks on the timeline, but nightly (Fx40) has a combined tool and the profile/profileEnd commands landing soon
watch/unwatch are from Object.prototype, confusingly enough!