Function startProfilerTimer

lib/assets/react-source/development/react.js:20091–20098

(fiber)

	}

	function startProfilerTimer(fiber) {

	  profilerStartTime = now$1();

	  if (fiber.actualStartTime < 0) {
	    fiber.actualStartTime = now$1();
	  }
	}

	function stopProfilerTimerIfRunning(fiber) {