Format all tests.

tests/language_strong/function_argument_test.dart

Index: tests/language_strong/function_argument_test.dart
diff --git a/tests/language_strong/function_argument_test.dart b/tests/language_strong/function_argument_test.dart
index b0cb5bb1c244ac57c8edd63c714046e9ec84e57c..f56861a915bc8bc6a68cb2b4e56c3de223a938b9 100644
--- a/tests/language_strong/function_argument_test.dart
+++ b/tests/language_strong/function_argument_test.dart
@@ -11,7 +11,9 @@ class FunctionArgumentTest {
   }
 
   static void testMain() {
-    Expect.equals(42, testMe(() { return 42; }));
+    Expect.equals(42, testMe(() {
+      return 42;
+    }));
   }
 }