Merge libv1.

samples/playground/playground.dart

 // Copyright (c) 2012, 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.
 
-#import('dart:html');
+import 'dart:html';
 
 void run() {
   // Get user script.
   final textarea = document.query('#code');
   final text = textarea.value;
 
   // Clear previous output.
   final output = document.query('#output');
   output.innerHTML = '';
 
@@ skipping 11 matching lines @@
   </body>
 </html>
 ''';
   output.nodes.add(iframe);
 }
 
 void main() {
   final button = document.query('#button');
   button.on.click.add((e) => run(), false);
 }