Format all tests.

tests/language/deopt_lazy_finalization_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Test deoptimziation caused by lazy finalization.
 // VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation
 
 import "package:expect/expect.dart";
 
 main() {
   Expect.equals(20000, part1());
@@ skipping 21 matching lines @@
 
   loop() {
     var sum = 0;
     for (int i = 0; i < 10000; i++) {
       sum += foo();
     }
     return sum;
   }
 }
 
-class Aa extends A {
-
-}
+class Aa extends A {}
 
 class B extends Aa {
   foo() => -2;
-}
+}