dart2js: run dartfmt on tests

tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart

Index: tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart
diff --git a/tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart b/tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart
index 6f7241892fc389c9b534b17b49f50c894af80d0b..e8caff34699088140580d4bba58d25c1e639c056 100644
--- a/tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart
+++ b/tests/compiler/dart2js_extra/lookup_map/entries_aside_test.dart
@@ -5,13 +5,17 @@
 import 'package:lookup_map/lookup_map.dart';
 import 'package:expect/expect.dart';
 
-class A{}
-class B{}
+class A {}
+
+class B {}
+
 const entries = const [
-  A, "the-text-for-A",
-  B, "the-text-for-B",
+  A,
+  "the-text-for-A",
+  B,
+  "the-text-for-B",
 ];
-const map = const LookupMap(entries );
+const map = const LookupMap(entries);
 
 main() {
   Expect.equals(map[A], 'the-text-for-A');