src/vs/base/browser/performance.ts/onKeyDown
	export function onKeyDown() {
		/** Direct Check C. See explanation in {@link recordIfFinished} */
		recordIfFinished();
		performance.mark('inputlatency/start');
		performance.mark('keydown/start');
		state.keydown = EventPhase.InProgress;
		queueMicrotask(markKeyDownEnd);
	}