Generate EventListener attributes of non-EventTarget classes.

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 e4b332bfa2cc7b31109464a8260035545d4d4ab7..eea85378a6851c152aaf3007580d923f6a201444 100644
--- a/client/dom/generated/src/interface/FileWriter.dart
+++ b/client/dom/generated/src/interface/FileWriter.dart
@@ -16,6 +16,30 @@ interface FileWriter {
 
   int get length();
 
+  EventListener get onabort();
+
+  void set onabort(EventListener value);
+
+  EventListener get onerror();
+
+  void set onerror(EventListener value);
+
+  EventListener get onprogress();
+
+  void set onprogress(EventListener value);
+
+  EventListener get onwrite();
+
+  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();