Format all tests.

tests/lib/mirrors/private_class_field_test.dart

Index: tests/lib/mirrors/private_class_field_test.dart
diff --git a/tests/lib/mirrors/private_class_field_test.dart b/tests/lib/mirrors/private_class_field_test.dart
index 81e0d826e94eee9c6040eee05e5d99242462694b..ad8a2d36c93708bc6ec001725d939a1af1ba008a 100644
--- a/tests/lib/mirrors/private_class_field_test.dart
+++ b/tests/lib/mirrors/private_class_field_test.dart
@@ -17,7 +17,7 @@ void main() {
   var classMirror = reflectClass(C);
   // The symbol is private w/r/t the wrong library.
   Expect.throws(() => classMirror.getField(#_privateField),
-                (e) => e is NoSuchMethodError);
+      (e) => e is NoSuchMethodError);
 
   Expect.equals(42, classMirror.getField(privateFieldSymbolInOther).reflectee);
 }