Add metadata to messages emitted by live tests.

lib/src/runner/runner_test.dart

Index: lib/src/runner/runner_test.dart
diff --git a/lib/src/runner/runner_test.dart b/lib/src/runner/runner_test.dart
index 87c16ae94369990e08accc73a919d6b7e0b6e235..5e5672e90ce468552766df842bee319a96f57680 100644
--- a/lib/src/runner/runner_test.dart
+++ b/lib/src/runner/runner_test.dart
@@ -8,6 +8,7 @@ import 'package:stream_channel/stream_channel.dart';
 import '../backend/group.dart';
 import '../backend/live_test.dart';
 import '../backend/live_test_controller.dart';
+import '../backend/message.dart';
 import '../backend/metadata.dart';
 import '../backend/operating_system.dart';
 import '../backend/state.dart';
@@ -62,8 +63,10 @@ class RunnerTest extends Test {
               new State(
                   new Status.parse(message['status']),
                   new Result.parse(message['result'])));
-        } else if (message['type'] == 'print') {
-          controller.print(message['line']);
+        } else if (message['type'] == 'message') {
+          controller.message(new Message(
+              new MessageType.parse(message['message-type']),
+              message['text']));
         } else {
           assert(message['type'] == 'complete');
           controller.completer.complete();