Format all tests.

tests/language_strong/interceptor9_test.dart

 // Copyright (c) 2014, 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.
 
 // Regression test for dart2js whose codegen in some cases did not take is
 // tests into account when computing the set of classes for interceptors.
 // See http://dartbug.com/17325
 
 import "package:expect/expect.dart";
 import "dart:typed_data";
 
-confuse(x, [y=null]) => new DateTime.now().day == 42 ? y : x;
+confuse(x, [y = null]) => new DateTime.now().day == 42 ? y : x;
 
 boom() {
-    var x = confuse(new Uint8List(22), "");
-    Expect.isTrue(x is Uint8List);
-    x.startsWith("a");
-    x.endsWith("u");
+  var x = confuse(new Uint8List(22), "");
+  Expect.isTrue(x is Uint8List);
+  x.startsWith("a");
+  x.endsWith("u");
 }
 
 main() {
   try {
     var f;
-    if (confuse(true)) { // prevent inlining
+    if (confuse(true)) {
+      // prevent inlining
       f = boom;
     }
     f();
   } catch (e) {
     if (e is ExpectException) throw e;
   }
 }