Print a "." for each "verbose info" message received from the compiler when not in verbose mode.

dart/site/try/src/compilation.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.compilation;
 
 import 'dart:html' show
     Blob,
     Element,
     ErrorEvent,
@@ skipping 225 matching lines @@
           onError(event.message);
         });
   }
 
   onDiagnostic(Map<String, dynamic> diagnostic) {
     String kind = diagnostic['kind'];
     String message = diagnostic['message'];
     if (kind == 'verbose info') {
       if (verboseCompiler) {
         consolePrint(message);
+      } else {
+        console.appendText('.');
       }
       return;
     }
     String uri = diagnostic['uri'];
     if (uri == null) {
       clear();
       consolePrint(message);
       return;
     }
     if (uri != 'memory:/main.dart') return;
@@ skipping 20 matching lines @@
   port.send(replyTo.sendPort);
   replyTo.listen((message) {
     List list = message as List;
     try {
       compile(list[0], list[1]);
     } catch (exception, stack) {
       port.send('$exception\n$stack');
     }
   });
 }