Simplify content rewriting.

dart/site/try/src/decoration.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.decoration;
 
 import 'dart:html';
 
 class Decoration {
   final String color;
@@ skipping 104 matching lines @@
         color: decoration.color,
         bold: decoration.bold,
         italic: decoration.italic,
         stress: decoration.stress,
         important: decoration.important);
   }
 
   Element applyTo(text) {
     var codeCompletion = new DivElement()
         ..contentEditable = 'false'
-        ..classes.add('dart-code-completion')
-        ..appendText('Completion goes here');
+        ..classes.add('dart-code-completion');
     return super.applyTo(text)
         ..classes.add('dart-code-completion-holder')
         ..nodes.add(codeCompletion);
   }
 }