Use fields in hidden native DOM classes instead of getters/setters.

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

Index: client/dom/generated/src/frog/HTMLEmbedElement.dart
diff --git a/client/dom/generated/src/frog/HTMLEmbedElement.dart b/client/dom/generated/src/frog/HTMLEmbedElement.dart
index 3a25ef082072cb088eb02f1b23880cbe6705da97..86fffe51660a146f5f27fe64158d98183f04d6e8 100644
--- a/client/dom/generated/src/frog/HTMLEmbedElement.dart
+++ b/client/dom/generated/src/frog/HTMLEmbedElement.dart
@@ -1,29 +1,17 @@
 
 class _HTMLEmbedElementJs extends _HTMLElementJs implements HTMLEmbedElement native "*HTMLEmbedElement" {
 
-  String get align() native "return this.align;";
+  String align;
 
-  void set align(String value) native "this.align = value;";
+  String height;
 
-  String get height() native "return this.height;";
+  String name;
 
-  void set height(String value) native "this.height = value;";
+  String src;
 
-  String get name() native "return this.name;";
+  String type;
 
-  void set name(String value) native "this.name = value;";
-
-  String get src() native "return this.src;";
-
-  void set src(String value) native "this.src = value;";
-
-  String get type() native "return this.type;";
-
-  void set type(String value) native "this.type = value;";
-
-  String get width() native "return this.width;";
-
-  void set width(String value) native "this.width = value;";
+  String width;
 
   _SVGDocumentJs getSVGDocument() native;
 }