Send console messages through interaction manager.

dart/site/try/src/ui.dart

 // Copyright (c) 2013, 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 trydart.ui;
 
 import 'dart:html';
 
 import 'dart:async' show
     Future,
@@ skipping 74 matching lines @@
 }
 
 Map<String, Function> codeCallbacks = new Map<String, Function>();
 
 void onCodeChange(Event event) {
   SelectElement select = event.target;
   String id = select.querySelectorAll('option')[select.selectedIndex].id;
   Function action = codeCallbacks[id];
   if (action != null) action(event);
   outputFrame.style.display = 'none';
+  outputDiv.nodes.clear();
 }
 
 buildUI() {
   interaction = new InteractionManager();
 
   CompilationUnit.onChanged.listen(interaction.onCompilationUnitChanged);
 
   window.localStorage['currentSample'] = '$currentSample';
 
   buildCode(interaction);
@@ skipping 86 matching lines @@
 
   tryColumn.append(inputWrapper);
   outputFrame.style.display = 'none';
   runColumn.append(outputFrame);
   runColumn.append(outputWrapper);
   runColumn.append(hackDiv);
 
   var settingsElement = document.getElementById('settings');
   settingsElement.onClick.listen(openSettings);
 
-  window.onMessage.listen(interaction.onMessage);
+  window.onMessage.listen(interaction.onWindowMessage);
 
   observer = new MutationObserver(interaction.onMutation)
       ..observe(
           mainEditorPane, childList: true, characterData: true, subtree: true);
 
   scheduleMicrotask(() {
     mainEditorPane.appendText(currentSource);
   });
 
   // You cannot install event handlers on window.applicationCache
@@ skipping 254 matching lines @@
     window.localStorage['compilationPaused'] = '$compilationPaused';
     window.localStorage['codeFont'] = '$codeFont';
 
     dialog.style.height = '0px';
   }
   form.onSubmit.listen(onSubmit);
 
   var doneButton = document.getElementById('settings-done');
   doneButton.onClick.listen(onSubmit);
 }