Format all tests.

tests/language/prefix12_test.dart

Index: tests/language/prefix12_test.dart
diff --git a/tests/language/prefix12_test.dart b/tests/language/prefix12_test.dart
index e2c90b3c1ad366bbdfb55ceadfd318892df189c7..1aeae09e8221e086f3604ca2e062ab0c4cc220d1 100644
--- a/tests/language/prefix12_test.dart
+++ b/tests/language/prefix12_test.dart
@@ -4,6 +4,7 @@
 //
 
 library Prefix12Test.dart;
+
 import "package:expect/expect.dart";
 import "library11.dart" as lib11;
 
@@ -14,6 +15,7 @@ class Prefix12Test {
     result = obj.fld;
     Expect.equals(10, result);
   }
+
   static Test2() {
     int result = 0;
     var obj = new lib11.Library111<int>.namedConstructor(10);