Use 'field' syntax in dart:dom interfaces.

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

Index: client/dom/generated/src/interface/HTMLTrackElement.dart
diff --git a/client/dom/generated/src/interface/HTMLTrackElement.dart b/client/dom/generated/src/interface/HTMLTrackElement.dart
index 7210f9ad7a4b7817693365618edab645c9c8d749..510a090713beaedbd0d0cdbe58844d6f0c46c191 100644
--- a/client/dom/generated/src/interface/HTMLTrackElement.dart
+++ b/client/dom/generated/src/interface/HTMLTrackElement.dart
@@ -14,27 +14,17 @@ interface HTMLTrackElement extends HTMLElement {
 
   static final int NONE = 0;
 
-  bool get isDefault();
+  bool isDefault;
 
-  void set isDefault(bool value);
+  String kind;
 
-  String get kind();
+  String label;
 
-  void set kind(String value);
+  final int readyState;
 
-  String get label();
+  String src;
 
-  void set label(String value);
+  String srclang;
 
-  int get readyState();
-
-  String get src();
-
-  void set src(String value);
-
-  String get srclang();
-
-  void set srclang(String value);
-
-  TextTrack get track();
+  final TextTrack track;
 }