dart2js: run dartfmt on tests

tests/compiler/dart2js/zero_termination_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.
 
 // A regression test for issue 22667.
 //
 // Makes sure that we don't print a '\0' character for files that are not
 // properly new-line terminated.
 library zero_termination_test;
 
@@ skipping 14 matching lines @@
   response.statusCode = HttpStatus.NOT_FOUND;
   response.close();
 }
 
 Future handleRequest(HttpRequest request) {
   final String path = request.uri.path.substring(1);
   final Uri requestPath = pathOfData.resolve(path);
   final File file = new File(requestPath.toFilePath());
   return file.exists().then((bool found) {
     if (found) {
-      file.openRead()
-          .pipe(request.response)
-          .catchError((e) { _sendNotFound(request.response); });
+      file.openRead().pipe(request.response).catchError((e) {
+        _sendNotFound(request.response);
+      });
     } else {
       _sendNotFound(request.response);
     }
   });
 }
 
 void cleanup() {
   File outFile = new File(outFilePath);
   if (outFile.existsSync()) {
     outFile.deleteSync();
@@ skipping 31 matching lines @@
   try {
     await cleanup();
     check(await launchDart2Js(args, noStdoutEncoding: true));
   } finally {
     await server.close();
     await cleanup();
   }
 }
 
 Future testHttp() {
-  return HttpServer.bind(InternetAddress.LOOPBACK_IP_V4, 0)
+  return HttpServer
+      .bind(InternetAddress.LOOPBACK_IP_V4, 0)
       .then((HttpServer server) => serverRunning(server));
 }
 
 runTests() async {
   tempDir = Directory.systemTemp.createTempSync('directory_test');
   outFilePath = path.join(tempDir.path, "out.js");
 
   try {
     await testFile();
     await testHttp();
   } finally {
-    await tempDir.delete(recursive:true);
+    await tempDir.delete(recursive: true);
   }
 }
 
 main() {
   asyncStart();
   runTests().whenComplete(asyncEnd);
 }