Fix dart2js type warnings

sdk/lib/svg/dartium/svg_dartium.dart

Index: sdk/lib/svg/dartium/svg_dartium.dart
diff --git a/sdk/lib/svg/dartium/svg_dartium.dart b/sdk/lib/svg/dartium/svg_dartium.dart
index 8c5c3b7185c5de11a589e0af1fecc5bd2fa0c51f..5e6cb1a10946f84870234db9af1e48b7a359fc2f 100644
--- a/sdk/lib/svg/dartium/svg_dartium.dart
+++ b/sdk/lib/svg/dartium/svg_dartium.dart
@@ -6429,6 +6429,21 @@ class SvgElement extends Element implements GlobalEventHandlers {
   @Experimental() // untriaged
   void set xmlspace(String value) native "SVGElement_xmlspace_Setter";
 
+  @DomName('SVGElement.addEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void addEventListener(String type, EventListener listener, [bool useCapture]) native "SVGElement_addEventListener_Callback";
+
+  @DomName('SVGElement.dispatchEvent')
+  @DocsEditable()
+  @Experimental() // untriaged
+  bool dispatchEvent(Event event) native "SVGElement_dispatchEvent_Callback";
+
+  @DomName('SVGElement.removeEventListener')
+  @DocsEditable()
+  @Experimental() // untriaged
+  void removeEventListener(String type, EventListener listener, [bool useCapture]) native "SVGElement_removeEventListener_Callback";
+
   @DomName('SVGElement.onabort')
   @DocsEditable()
   @Experimental() // untriaged