Removed const from classes arrays in Observatory

runtime/observatory/lib/src/elements/function_view.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 function_view_element;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:observatory/models.dart' as M;
 import 'package:observatory/src/elements/class_ref.dart';
@@ skipping 125 matching lines @@
   detached() {
     super.detached();
     _r.disable(notify: true);
     children = [];
   }
 
   void render() {
     children = [
       new NavBarElement(queue: _r.queue)
         ..children = _createMenu(),
-      new DivElement()..classes = const ['content-centered-big']
+      new DivElement()..classes = ['content-centered-big']
         ..children = [
           new HeadingElement.h2()..text = 'Function ${_function.name}',
           new HRElement(),
           new ObjectCommonElement(_isolate, _function, _retainedSizes,
                                   _reachableSizes, _references, _retainingPaths,
                                   _instances, queue: _r.queue),
           new BRElement(),
           new DivElement()..classes = ['memberList']
             ..children = _createMembers(),
           new HRElement(),
@@ skipping 230 matching lines @@
       case M.FunctionKind.stub:
         return 'stub';
       case M.FunctionKind.tag:
         return 'tag';
       case M.FunctionKind.signatureFunction:
         return 'signature function';
     }
     throw new Exception('Unknown Functionkind ($kind)');
   }
 }