Updating dwc for breaking changes that will be part of the next sdk

build/gen_html_setters.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:io';
 
 // TODO(jmesserly): should be importing a compiler mirrors package.
 // This is currently generated by the shell script.
 import 'compile_mirrors.dart';
 
@@ skipping 22 matching lines @@
 The information is used to create "$OUTPUT_NAME".
 ''');
 
   var sdk = Platform.environment['DART_SDK'];
   if (sdk == null) {
     print('DART_SDK path must be set. Use gen_html_setters.sh.');
     exit(1);
   }
 
   var htmlPath = new Path('dart:html');
-  var audioPath = new Path('dart:web_audio');
   var svgPath = new Path('dart:svg');
   var libPath = new Path(sdk).append('/');
   var pkgPath = new Path(sdk).append('pkg/');
 
   var mirrors = new Compilation.library(
-      [htmlPath, audioPath, svgPath], libPath, pkgPath).mirrors;
+      [htmlPath, svgPath], libPath, pkgPath).mirrors;
   var html = mirrors.libraries['html'];
 
 
   var extendsCode = new StringBuffer();
   extendsCode.add('var htmlElementExtends = const {\n');
 
   var code = new StringBuffer();
   code.add('// This file is autogenerated by $MY_NAME. Do not edit.\n');
   code.add('library html5_setters;\n');
   
@@ skipping 54 matching lines @@
 void _addElement(ClassMirror cls, Set elemSet) {
   while (cls != null) {
     if (!cls.isOriginalDeclaration) cls = cls.originalDeclaration;
     if (!cls.displayName.endsWith('Element') || elemSet.contains(cls)) {
       break;
     }
     elemSet.add(cls);
     cls = cls.superclass;
   }
 }