Support shelf 0.7.0.

test/runner/browser/chrome_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.
 
 @TestOn("vm")
 
 import 'package:scheduled_test/descriptor.dart' as d;
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:test/src/runner/browser/chrome.dart';
@@ skipping 16 matching lines @@
     server.handleJavaScript('''
 var webSocket = new WebSocket(window.location.href.replace("http://", "ws://"));
 webSocket.addEventListener("open", function() {
   webSocket.send("loaded!");
 });
 ''');
 
     var webSocket = server.handleWebSocket();
 
     schedule(() async {
-      expect(await (await webSocket).first, equals("loaded!"));
+      expect(await (await webSocket).stream.first, equals("loaded!"));
     });
   },
       // It's not clear why, but this test in particular seems to time out
       // when run in parallel with many other tests.
       timeout: new Timeout.factor(2));
 
   test("a process can be killed synchronously after it's started", () async {
     var server = new CodeServer();
 
     schedule(() async {
@@ skipping 30 matching lines @@
 void main() {
   test("failure", () => throw new TestFailure("oh no"));
 }
 """).create();
 
     var test = runTest(["-p", "chrome", "test.dart"]);
     test.stdout.expect(consumeThrough(contains("-1: Some tests failed.")));
     test.shouldExit(1);
   });
 }