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

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

Index: client/dom/generated/src/frog/SVGStyleElement.dart
diff --git a/client/dom/generated/src/frog/SVGStyleElement.dart b/client/dom/generated/src/frog/SVGStyleElement.dart
index 0b3a48bb7ec2df370b4f5b9689e225f2f536f5f6..2ee90850e4e99231d35c05e71b4e65e113558b0e 100644
--- a/client/dom/generated/src/frog/SVGStyleElement.dart
+++ b/client/dom/generated/src/frog/SVGStyleElement.dart
@@ -1,25 +1,15 @@
 
 class _SVGStyleElementJs extends _SVGElementJs implements SVGStyleElement native "*SVGStyleElement" {
 
-  String get media() native "return this.media;";
+  String media;
 
-  void set media(String value) native "this.media = value;";
+  String title;
 
-  String get title() native "return this.title;";
-
-  void set title(String value) native "this.title = value;";
-
-  String get type() native "return this.type;";
-
-  void set type(String value) native "this.type = value;";
+  String type;
 
   // From SVGLangSpace
 
-  String get xmllang() native "return this.xmllang;";
-
-  void set xmllang(String value) native "this.xmllang = value;";
-
-  String get xmlspace() native "return this.xmlspace;";
+  String xmllang;
 
-  void set xmlspace(String value) native "this.xmlspace = value;";
+  String xmlspace;
 }