const runtime.traceEvHeapGoal

2 uses

	runtime (current package)
		traceevent.go#L74: 	traceEvHeapGoal           // gcController.heapGoal() change [timestamp, heap goal in bytes]
		traceruntime.go#L608: 	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvHeapGoal, traceArg(heapGoal))