Add metadata to messages emitted by live tests.

lib/src/runner/load_suite.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.
 
 import 'dart:async';
 
 import 'package:stack_trace/stack_trace.dart';
 
 import '../../test.dart';
 import '../backend/group.dart';
@@ skipping 138 matching lines @@
       return newSuite == null ? null : new Pair(newSuite, zone);
     }));
   }
 
   /// Runs the test and returns the suite.
   ///
   /// Rather than emitting errors through a [LiveTest], this just pipes them
   /// through the return value.
   Future<RunnerSuite> getSuite() async {
     var liveTest = await test.load(this);
-    liveTest.onPrint.listen(print);
+    liveTest.onMessage.listen((message) => print(message.text));
     await liveTest.run();
 
     if (liveTest.errors.isEmpty) return await suite;
 
     var error = liveTest.errors.first;
     await new Future.error(error.error, error.stackTrace);
     throw 'unreachable';
   }
 
   LoadSuite filter(bool callback(Test test)) {
     var filtered = this.group.filter(callback);
     if (filtered == null) filtered = new Group.root([], metadata: metadata);
     return new LoadSuite._filtered(this, filtered);
   }
 
   Future close() async {}
 }