[flutter_tools] track null safety usage (#59822)
* [flutter_tools] track null safety usage * Update flutter_command_test.dart * cleanups
J
Jonah Williams committed
55abbb6be6756ec03dc3228d3de81054522ee419
Parent: 09f1764
Committed by GitHub <noreply@github.com>
on 6/23/2020, 12:05:01 AM