Format all tests.

tests/language_strong/generic_field_mixin5_test.dart

Index: tests/language_strong/generic_field_mixin5_test.dart
diff --git a/tests/language_strong/generic_field_mixin5_test.dart b/tests/language_strong/generic_field_mixin5_test.dart
index c51ed5a35a77a9b92e053bc96eef1afeddaf5f55..a684903b361f6c6a97ccba947c69cba334cc8d37 100644
--- a/tests/language_strong/generic_field_mixin5_test.dart
+++ b/tests/language_strong/generic_field_mixin5_test.dart
@@ -7,9 +7,13 @@
 import 'package:expect/expect.dart';
 
 class M<T> {
-  Type field = () { return T; } ();
+  Type field = () {
+    return T;
+  }();
 }
+
 class A<U> {}
+
 class C1<V> = Object with M<V>;
 class C2 = Object with M<int>;
 class C3 = Object with M<String>;
@@ -21,4 +25,4 @@ main() {
   Expect.equals(int, new C2().field);
 
   Expect.equals(String, new C3().field);
-}
+}