Run dartfmt on all files under runtime.

runtime/observatory/tests/service/developer_server_control_test.dart

 // Copyright (c) 2014, 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
 
 import 'dart:async';
 import 'dart:developer';
 import 'package:observatory/service_io.dart';
 import 'package:unittest/unittest.dart';
 import 'test_helper.dart';
@@ skipping 51 matching lines @@
     majorVersion = info.majorVersion;
     minorVersion = info.minorVersion;
     serverUri = info.serverUri;
     expect(info.majorVersion, equals(majorVersion));
     expect(info.minorVersion, equals(minorVersion));
     expect(info.serverUri, equals(serverUri));
   }
 }
 
 var tests = [
-(Isolate isolate) async {
-  await isolate.reload();
-  // Just getting here means that the testee enabled the service protocol
-  // web server.
-  expect(true, true);
-}
+  (Isolate isolate) async {
+    await isolate.reload();
+    // Just getting here means that the testee enabled the service protocol
+    // web server.
+    expect(true, true);
+  }
 ];
 
-main(args) => runIsolateTests(args,
-                              tests,
-                              testeeBefore: testeeBefore,
-                              // the testee is responsible for starting the
-                              // web server.
-                              testeeControlsServer: true);
+main(args) => runIsolateTests(args, tests,
+    testeeBefore: testeeBefore,
+    // the testee is responsible for starting the
+    // web server.
+    testeeControlsServer: true);