Add support for running browser tests to the test runner.

lib/src/runner/browser/browser_manager.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.
 
 library unittest.runner.browser.browser_manager;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:http_parser/http_parser.dart';
@@ skipping 41 matching lines @@
     return suiteChannel.stream.first.then((response) {
       if (response["type"] == "loadException") {
         return new Future.error(new LoadException(path, response["message"]));
       } else if (response["type"] == "error") {
         var asyncError = RemoteException.deserialize(response["error"]);
         return new Future.error(
             new LoadException(path, asyncError.error),
             asyncError.stackTrace);
       }
 
-      return new Suite(path, response["tests"].map((test) {
+      return new Suite(response["tests"].map((test) {
         var testChannel = suiteChannel.virtualChannel(test['channel']);
         return new IframeTest(test['name'], testChannel);
-      }));
+      }), path: path, platform: "Chrome");
     });
   }
 }