Format all tests.

tests/lib/mirrors/optional_parameters_test.dart

Index: tests/lib/mirrors/optional_parameters_test.dart
diff --git a/tests/lib/mirrors/optional_parameters_test.dart b/tests/lib/mirrors/optional_parameters_test.dart
index edb3f5682da8856f594f039a061bf9bd84a809bf..bee39f4741715d3b643686654a7e6900dbfa7091 100644
--- a/tests/lib/mirrors/optional_parameters_test.dart
+++ b/tests/lib/mirrors/optional_parameters_test.dart
@@ -17,10 +17,10 @@ class A {
 }
 
 class B {
-  foo([int x]) => x+1;
+  foo([int x]) => x + 1;
 }
 
-main () {
+main() {
   var x = {};
   x["A"] = reflect(new A());
   x["B"] = reflect(new B());