Use 'field' syntax in dart:dom interfaces.

client/dom/generated/src/interface/AudioParam.dart

 // Copyright (c) 2011, 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.
 
 // WARNING: Do not edit - generated code.
 
 interface AudioParam {
 
-  num get defaultValue();
+  final num defaultValue;
 
-  num get maxValue();
+  final num maxValue;
 
-  num get minValue();
+  final num minValue;
 
-  String get name();
+  final String name;
 
-  int get units();
+  final int units;
 
-  num get value();
-
-  void set value(num value);
+  num value;
 
   void cancelScheduledValues(num startTime);
 
   void exponentialRampToValueAtTime(num value, num time);
 
   void linearRampToValueAtTime(num value, num time);
 
   void setTargetValueAtTime(num targetValue, num time, num timeConstant);
 
   void setValueAtTime(num value, num time);
 
   void setValueCurveAtTime(Float32Array values, num time, num duration);
 }