Enable SVG for dartc and frog

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

+
+class SVGMaskElement extends SVGElement native "SVGMaskElement" {
+
+  SVGAnimatedLength height;
+
+  SVGAnimatedEnumeration maskContentUnits;
+
+  SVGAnimatedEnumeration maskUnits;
+
+  SVGAnimatedLength width;
+
+  SVGAnimatedLength x;
+
+  SVGAnimatedLength y;
+
+  // From SVGTests
+
+  SVGStringList requiredExtensions;
+
+  SVGStringList requiredFeatures;
+
+  SVGStringList systemLanguage;
+
+  bool hasExtension(String extension) native;
+
+  // From SVGLangSpace
+
+  String xmllang;
+
+  String xmlspace;
+
+  // From SVGExternalResourcesRequired
+
+  SVGAnimatedBoolean externalResourcesRequired;
+
+  // From SVGStylable
+
+  SVGAnimatedString className;
+
+  CSSStyleDeclaration style;
+
+  CSSValue getPresentationAttribute(String name) native;
+}