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

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

Index: client/dom/generated/src/frog/SVGPathSegCurvetoCubicRel.dart
diff --git a/client/dom/generated/src/frog/SVGPathSegCurvetoCubicRel.dart b/client/dom/generated/src/frog/SVGPathSegCurvetoCubicRel.dart
index afd7fe189316da66a472b246fb73a893972a7244..edbaf5f23cdd40ec9432914c6779593befd9f13e 100644
--- a/client/dom/generated/src/frog/SVGPathSegCurvetoCubicRel.dart
+++ b/client/dom/generated/src/frog/SVGPathSegCurvetoCubicRel.dart
@@ -1,15 +1,27 @@
 
 class SVGPathSegCurvetoCubicRel extends SVGPathSeg native "*SVGPathSegCurvetoCubicRel" {
 
-  num x;
+  num get x() native "return this.x;";
 
-  num x1;
+  void set x(num value) native "this.x = value;";
 
-  num x2;
+  num get x1() native "return this.x1;";
 
-  num y;
+  void set x1(num value) native "this.x1 = value;";
 
-  num y1;
+  num get x2() native "return this.x2;";
 
-  num y2;
+  void set x2(num value) native "this.x2 = value;";
+
+  num get y() native "return this.y;";
+
+  void set y(num value) native "this.y = value;";
+
+  num get y1() native "return this.y1;";
+
+  void set y1(num value) native "this.y1 = value;";
+
+  num get y2() native "return this.y2;";
+
+  void set y2(num value) native "this.y2 = value;";
 }