Enable SVG for dartc and frog

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

+
+class SVGSymbolElement extends SVGElement native "SVGSymbolElement" {
+
+  // From SVGLangSpace
+
+  String xmllang;
+
+  String xmlspace;
+
+  // From SVGExternalResourcesRequired
+
+  SVGAnimatedBoolean externalResourcesRequired;
+
+  // From SVGStylable
+
+  SVGAnimatedString className;
+
+  CSSStyleDeclaration style;
+
+  CSSValue getPresentationAttribute(String name) native;
+
+  // From SVGFitToViewBox
+
+  SVGAnimatedPreserveAspectRatio preserveAspectRatio;
+
+  SVGAnimatedRect viewBox;
+}