dart2js: run dartfmt on tests

tests/compiler/dart2js/simple_inferrer_const_closure4_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.
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'compiler_helper.dart';
 import 'type_mask_test_helper.dart';
 
 const String TEST = """
 
 method(a) {  // Called via [foo] with integer then double.
   return a;
 }
 
 const foo = method;
 
 returnNum(x) {
   return foo(x);
 }
 
 main() {
   returnNum(10);
   returnNum(10.5);
 }
 """;
 
-
 void main() {
   Uri uri = new Uri(scheme: 'source');
   var compiler = compilerFor(TEST, uri);
   asyncTest(() => compiler.run(uri).then((_) {
-    var typesInferrer = compiler.globalInference.typesInferrer;
+        var typesInferrer = compiler.globalInference.typesInferrer;
 
-    checkArgument(String functionName, type) {
-      var functionElement = findElement(compiler, functionName);
-      var signature = functionElement.functionSignature;
-      var element = signature.requiredParameters.first;
-      Expect.equals(type,
-          simplify(typesInferrer.getTypeOfElement(element), compiler),
-          functionName);
-    }
+        checkArgument(String functionName, type) {
+          var functionElement = findElement(compiler, functionName);
+          var signature = functionElement.functionSignature;
+          var element = signature.requiredParameters.first;
+          Expect.equals(
+              type,
+              simplify(typesInferrer.getTypeOfElement(element), compiler),
+              functionName);
+        }
 
-    checkArgument('method', compiler.commonMasks.numType);
-    checkArgument('returnNum', compiler.commonMasks.numType);
-  }));
+        checkArgument('method', compiler.commonMasks.numType);
+        checkArgument('returnNum', compiler.commonMasks.numType);
+      }));
 }