dart2js: run dartfmt on tests

tests/compiler/dart2js/type_inference7_test.dart

Index: tests/compiler/dart2js/type_inference7_test.dart
diff --git a/tests/compiler/dart2js/type_inference7_test.dart b/tests/compiler/dart2js/type_inference7_test.dart
index af867ccc6f615f0c6b16ba008c4fc24fc70a16d9..42b19b046363f2b9c84440c92c9cc858b2e97ab8 100644
--- a/tests/compiler/dart2js/type_inference7_test.dart
+++ b/tests/compiler/dart2js/type_inference7_test.dart
@@ -33,9 +33,8 @@ Future runTest() async {
     // First parameter is uint31|String|bool.
     var mask1 = typesInferrer.getTypeOfElement(foo.parameters[0]);
     Expect.isTrue(mask1.isUnion);
-    var expectedTypes = new Set.from([commonMasks.uint31Type,
-                                      commonMasks.stringType,
-                                      commonMasks.boolType]);
+    var expectedTypes = new Set.from(
+        [commonMasks.uint31Type, commonMasks.stringType, commonMasks.boolType]);
     for (var typeMask in mask1.disjointMasks) {
       Expect.isFalse(typeMask.isNullable);
       var simpleType = simplify(typeMask, compiler);