dart2js: run dartfmt on tests

tests/compiler/dart2js/string_interpolation_test.dart

Index: tests/compiler/dart2js/string_interpolation_test.dart
diff --git a/tests/compiler/dart2js/string_interpolation_test.dart b/tests/compiler/dart2js/string_interpolation_test.dart
index 4cb5f608bb7eb41f3728bb093ec86bde1f6ace0a..ae49b852af4ccf8428f98c271011fdaa9dbac31a 100644
--- a/tests/compiler/dart2js/string_interpolation_test.dart
+++ b/tests/compiler/dart2js/string_interpolation_test.dart
@@ -7,13 +7,14 @@ import "package:async_helper/async_helper.dart";
 import 'compiler_helper.dart';
 
 main() {
-  asyncTest(() => compileAll(
-      r'''main() { return "${2}${true}${'a'}${3.14}"; }''').then((code) {
-    Expect.isTrue(code.contains(r'2truea3.14'));
-  }));
+  asyncTest(() =>
+      compileAll(r'''main() { return "${2}${true}${'a'}${3.14}"; }''')
+          .then((code) {
+        Expect.isTrue(code.contains(r'2truea3.14'));
+      }));
 
-  asyncTest(() => compileAll(
-      r'''main() { return "foo ${new Object()}"; }''').then((code) {
-    Expect.isFalse(code.contains(r'$add'));
-  }));
+  asyncTest(() =>
+      compileAll(r'''main() { return "foo ${new Object()}"; }''').then((code) {
+        Expect.isFalse(code.contains(r'$add'));
+      }));
 }