Re-land "Format all multitests"

tests/language/null_is_bottom_test.dart

Index: tests/language/null_is_bottom_test.dart
diff --git a/tests/language/null_is_bottom_test.dart b/tests/language/null_is_bottom_test.dart
index 62f23f9bf8d1291b73cbed9d03da0ec98e4e3ba8..aa337b23fb9ebd94587280cbc2c684424ef35358 100644
--- a/tests/language/null_is_bottom_test.dart
+++ b/tests/language/null_is_bottom_test.dart
@@ -7,6 +7,7 @@
 import 'package:expect/expect.dart';
 
 class A {}
+
 typedef A ReturnA();
 typedef TakeA(A a);
 typedef Null ReturnNull();
@@ -139,4 +140,4 @@ main() {
   Expect.isTrue(testIsTakeNull(takeNull)); //                          //# 38: ok
   testAsTakeNull(takeA); //                                            //# 39: ok
   testAsTakeNull(takeNull); //                                         //# 40: ok
-}
+}