Use 'field' syntax in dart:dom interfaces.

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

Index: client/dom/generated/src/interface/AudioBufferSourceNode.dart
diff --git a/client/dom/generated/src/interface/AudioBufferSourceNode.dart b/client/dom/generated/src/interface/AudioBufferSourceNode.dart
index 6e619c9083606db0de9ee73eb6d0e5d1ded4874f..b1c1ab096b0f8723e5790831b557f3768845db69 100644
--- a/client/dom/generated/src/interface/AudioBufferSourceNode.dart
+++ b/client/dom/generated/src/interface/AudioBufferSourceNode.dart
@@ -6,21 +6,15 @@
 
 interface AudioBufferSourceNode extends AudioSourceNode {
 
-  AudioBuffer get buffer();
+  AudioBuffer buffer;
 
-  void set buffer(AudioBuffer value);
+  final AudioGain gain;
 
-  AudioGain get gain();
+  bool loop;
 
-  bool get loop();
+  bool looping;
 
-  void set loop(bool value);
-
-  bool get looping();
-
-  void set looping(bool value);
-
-  AudioParam get playbackRate();
+  final AudioParam playbackRate;
 
   void noteGrainOn(num when, num grainOffset, num grainDuration);