Enable Try Dart to run on IE11.

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 442 matching lines @@
       dialog.style.height = '${settingsHeight}px';
     });
   } else {
     dialog.style.height = '${settingsHeight}px';
   }
 
   onSubmit(Event event) {
     event.preventDefault();
 
     window.localStorage['alwaysRunInWorker'] = '$alwaysRunInWorker';
+    window.localStorage['alwaysRunInIframe'] = '$alwaysRunInIframe';
+    window.localStorage['communicateViaBlobs'] = '$communicateViaBlobs';
     window.localStorage['verboseCompiler'] = '$verboseCompiler';
     window.localStorage['minified'] = '$minified';
     window.localStorage['onlyAnalyze'] = '$onlyAnalyze';
     window.localStorage['enableDartMind'] = '$enableDartMind';
     window.localStorage['compilationPaused'] = '$compilationPaused';
     window.localStorage['codeFont'] = '$codeFont';
 
     dialog.style.height = '0px';
   }
   form.onSubmit.listen(onSubmit);
 
   var doneButton = document.getElementById('settings-done');
   doneButton.onClick.listen(onSubmit);
 }