dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart

Index: tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart
diff --git a/tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart b/tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart
index aa835a8562b7c1021ee14ee7b06080daf2436829..0222434f09f7b70764be23683f89f03840ec9487 100644
--- a/tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart
+++ b/tests/compiler/dart2js_extra/lookup_map/live_entry_test.dart
@@ -4,10 +4,10 @@
 
 import 'package:lookup_map/lookup_map.dart';
 import 'package:expect/expect.dart';
-class A{}
-const map = const LookupMap(const [
-    A, "the-text-for-A",
-]);
+
+class A {}
+
+const map = const LookupMap(const [A, "the-text-for-A",]);
 main() {
   Expect.equals(map[A], 'the-text-for-A');
 }