Format all tests.

tests/language/proxy4_test.dart

Index: tests/language/proxy4_test.dart
diff --git a/tests/language/proxy4_test.dart b/tests/language/proxy4_test.dart
index a7d44b5d6bbd470651f812fcead7605ec4ea412d..fe4948b765d3eefc2b29045cd1bb1100d4056131 100644
--- a/tests/language/proxy4_test.dart
+++ b/tests/language/proxy4_test.dart
@@ -9,10 +9,12 @@ class Mock {
   noSuchMethod(i) => 42;
 }
 
-abstract class Foo { int foo(); }
+abstract class Foo {
+  int foo();
+}
 
 class DontWarnMe extends Mock implements Foo {}
 
 main() {
   print(new DontWarnMe().foo());
-}
+}