Run dartfmt on all files under runtime.

runtime/observatory/tests/service/set_vm_name_rpc_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.
 // VMOptions=--error_on_bad_type --error_on_bad_override --vm-name=Walter
 
 import 'dart:async';
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
 
 var tests = [
   (VM vm) async {
     expect(vm.name, equals('Walter'));
 
     Completer completer = new Completer();
     var stream = await vm.getEventStream(VM.kVMStream);
     var subscription;
     subscription = stream.listen((ServiceEvent event) {
       if (event.kind == ServiceEvent.kVMUpdate) {
         expect(event.owner.type, equals('VM'));
         expect(event.owner.name, equals('Barbara'));
         subscription.cancel();
         completer.complete();
       }
     });
-    
+
     var result = await vm.setName('Barbara');
     expect(result.type, equals('Success'));
 
     await completer.future;
     expect(vm.name, equals('Barbara'));
   },
 ];
 
 main(args) async => runVMTests(args, tests,
-                               extraArgs: [ '--trace-service',
-                                            '--trace-service-verbose' ]);
+    extraArgs: ['--trace-service', '--trace-service-verbose']);