Format all tests.

tests/lib_strong/mirrors/private_class_field_test.dart

Index: tests/lib_strong/mirrors/private_class_field_test.dart
diff --git a/tests/lib_strong/mirrors/private_class_field_test.dart b/tests/lib_strong/mirrors/private_class_field_test.dart
index cedf9032c5a9ffe2d4a0f4f8a74835eaa00e8667..fe288550a2600776ee95c3abee37870036b6bdc4 100644
--- a/tests/lib_strong/mirrors/private_class_field_test.dart
+++ b/tests/lib_strong/mirrors/private_class_field_test.dart
@@ -14,7 +14,7 @@ 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);
 }