Revert "Fix observatory tests broken by running dartfmt."

runtime/tests/vm/dart/data_uri_spawn_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.
 
 import "dart:isolate";
 import "package:unittest/unittest.dart";
 
 Uri toDartDataUri(String source) {
   return Uri.parse("data:application/dart;charset=utf-8,"
-      "${Uri.encodeComponent(source)}");
+                   "${Uri.encodeComponent(source)}");
 }
 
 main() {
   test('Simple response', () {
     String source = """
 import "dart:isolate";
 main(List args, SendPort replyPort) {
   replyPort.send(42);
 }
 """;
 
     RawReceivePort receivePort;
     receivePort = new RawReceivePort(expectAsync((int message) {
       expect(message, equals(42));
       receivePort.close();
     }));
     Isolate.spawnUri(toDartDataUri(source), [], receivePort.sendPort);
   });
-}
+}