CPU profile displayed in three tables with a tree

runtime/observatory/lib/src/elements/debugger.dart

 // Copyright (c) 2014, 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 debugger_page_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'observatory_element.dart';
 import 'package:observatory/app.dart';
@@ skipping 872 matching lines @@
           _refreshStack(isolate.pauseEvent).then((_) {
             reportStatus();
           });
         });
       });
     } else {
       reportStatus();
     }
   }
 
-  void set isolate(Isolate iso) {
+  set isolate(Isolate iso) {
     // Setting the page's isolate will trigger updateIsolate to be called.
     //
     // TODO(turnidge): Rework ownership of the ObservatoryDebugger in another
     // change.
     page.isolate = iso;
   }
   Isolate get isolate => _isolate;
   Isolate _isolate;
   var _subscription;
 
@@ skipping 590 matching lines @@
           default:
             busy = false;
             break;
         }
       });
   }
 
   DebuggerInputElement.created() : super.created();
 }