Move frog dart:dom from fields to getters/setters.

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

Index: client/dom/generated/src/frog/FileWriter.dart
diff --git a/client/dom/generated/src/frog/FileWriter.dart b/client/dom/generated/src/frog/FileWriter.dart
index 38e9d2fcd132365eb4383e854c92b47c25a1c8c3..4e93aad75087a5832589b67b2a88d9f7fcd169ed 100644
--- a/client/dom/generated/src/frog/FileWriter.dart
+++ b/client/dom/generated/src/frog/FileWriter.dart
@@ -7,25 +7,37 @@ class FileWriter native "*FileWriter" {
 
   static final int WRITING = 1;
 
-  FileError error;
+  FileError get error() native "return this.error;";
 
-  int length;
+  int get length() native "return this.length;";
 
-  EventListener onabort;
+  EventListener get onabort() native "return this.onabort;";
 
-  EventListener onerror;
+  void set onabort(EventListener value) native "this.onabort = value;";
 
-  EventListener onprogress;
+  EventListener get onerror() native "return this.onerror;";
 
-  EventListener onwrite;
+  void set onerror(EventListener value) native "this.onerror = value;";
 
-  EventListener onwriteend;
+  EventListener get onprogress() native "return this.onprogress;";
 
-  EventListener onwritestart;
+  void set onprogress(EventListener value) native "this.onprogress = value;";
 
-  int position;
+  EventListener get onwrite() native "return this.onwrite;";
 
-  int readyState;
+  void set onwrite(EventListener value) native "this.onwrite = value;";
+
+  EventListener get onwriteend() native "return this.onwriteend;";
+
+  void set onwriteend(EventListener value) native "this.onwriteend = value;";
+
+  EventListener get onwritestart() native "return this.onwritestart;";
+
+  void set onwritestart(EventListener value) native "this.onwritestart = value;";
+
+  int get position() native "return this.position;";
+
+  int get readyState() native "return this.readyState;";
 
   void abort() native;