Run dartfmt on all files under runtime.

runtime/observatory/tests/service/get_ports_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
 
 library get_ports_rpc_test;
 
 import 'dart:isolate' hide Isolate;
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 
 import 'test_helper.dart';
 
 var port1;
 var port2;
 
 void warmup() {
   port1 = new RawReceivePort(null);
-  port2 = new RawReceivePort((_) {
-  });
+  port2 = new RawReceivePort((_) {});
 }
 
 int countHandlerMatches(ports, matcher) {
   var matches = 0;
   for (var port in ports) {
     if (matcher(port['handler'])) {
       matches++;
     }
   }
   return matches;
@@ skipping 14 matching lines @@
     expect(result['ports'], isList);
     var ports = result['ports'];
     // There are at least two ports: the two created in warm up. Some OSes
     // will have other ports open but we do not try and test for these.
     expect(ports.length, greaterThanOrEqualTo(2));
     expect(countHandlerMatches(ports, nullMatcher), greaterThanOrEqualTo(1));
     expect(countHandlerMatches(ports, closureMatcher), greaterThanOrEqualTo(1));
   },
 ];
 
-main(args) async => runIsolateTests(args, tests, testeeBefore:warmup);
+main(args) async => runIsolateTests(args, tests, testeeBefore: warmup);