Use 'field' syntax in dart:dom interfaces.

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

Index: client/dom/generated/src/interface/FileWriter.dart
diff --git a/client/dom/generated/src/interface/FileWriter.dart b/client/dom/generated/src/interface/FileWriter.dart
index eea85378a6851c152aaf3007580d923f6a201444..4938e45b5d2231d911836571ae5f1d2d1ac66a8c 100644
--- a/client/dom/generated/src/interface/FileWriter.dart
+++ b/client/dom/generated/src/interface/FileWriter.dart
@@ -12,37 +12,25 @@ interface FileWriter {
 
   static final int WRITING = 1;
 
-  FileError get error();
+  final FileError error;
 
-  int get length();
+  final int length;
 
-  EventListener get onabort();
+  EventListener onabort;
 
-  void set onabort(EventListener value);
+  EventListener onerror;
 
-  EventListener get onerror();
+  EventListener onprogress;
 
-  void set onerror(EventListener value);
+  EventListener onwrite;
 
-  EventListener get onprogress();
+  EventListener onwriteend;
 
-  void set onprogress(EventListener value);
+  EventListener onwritestart;
 
-  EventListener get onwrite();
+  final int position;
 
-  void set onwrite(EventListener value);
-
-  EventListener get onwriteend();
-
-  void set onwriteend(EventListener value);
-
-  EventListener get onwritestart();
-
-  void set onwritestart(EventListener value);
-
-  int get position();
-
-  int get readyState();
+  final int readyState;
 
   void abort();