dart2js: run dartfmt on tests

tests/compiler/dart2js/malformed_uri_test.dart

 // Copyright (c) 2015, 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 that the compiler can handle missing files used in imports, exports,
 // part tags or as the main source file.
 
 library dart2js.test.malformed_uri;
 
 import 'package:expect/expect.dart';
 import "package:async_helper/async_helper.dart";
 import 'memory_compiler.dart';
 
 const MEMORY_SOURCE_FILES = const {
   'main.dart': '''
 import '../../Udyn[mic ils/expect.dart';
 
 main () { print("Hi"); }
 ''',
 };
 
 testMalformedUri() {
   asyncTest(() async {
     var collector = new DiagnosticCollector();
     await runCompiler(
-        memorySourceFiles: MEMORY_SOURCE_FILES,
-        diagnosticHandler: collector);
+        memorySourceFiles: MEMORY_SOURCE_FILES, diagnosticHandler: collector);
     Expect.equals(1, collector.errors.length);
   });
 }
 
 void main() {
   testMalformedUri();
-}
+}