Format all tests.

tests/corelib/map_contains_value_test.dart

Index: tests/corelib/map_contains_value_test.dart
diff --git a/tests/corelib/map_contains_value_test.dart b/tests/corelib/map_contains_value_test.dart
index 84f02ae65106f2a143ee21f20e03f2f05f71116c..7837417e3fd6a62bf07690ddba84737213a57bac 100644
--- a/tests/corelib/map_contains_value_test.dart
+++ b/tests/corelib/map_contains_value_test.dart
@@ -4,14 +4,19 @@
 
 import "package:expect/expect.dart";
 
-class A { const A(); }
-class B extends A { const B(); }
+class A {
+  const A();
+}
+
+class B extends A {
+  const B();
+}
 
 main() {
   var map1 = new Map<B, B>();
   map1[const B()] = const B();
   var map2 = new Map<B, B>();
-  var list = <B>[ const B() ];
+  var list = <B>[const B()];
   Map<int, B> map3 = list.asMap();
 
   var maps = [map1, map2, map3];