"Reverting 17940"

tools/dom/templates/html/impl/impl_SVGElement.darttemplate

Index: tools/dom/templates/html/impl/impl_SVGElement.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_SVGElement.darttemplate b/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
index 86c34093a9077b676620bcd1806e1d91ac5fc451..42ad4508420ae38b99b7b98f44c59ad06890197f 100644
--- a/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
+++ b/tools/dom/templates/html/impl/impl_SVGElement.darttemplate
@@ -111,14 +111,5 @@ $(ANNOTATIONS)class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
     throw new UnsupportedError("Cannot invoke click SVG.");
   }
 
-  /**
-   * Checks to see if the SVG element type is supported by the current platform.
-   *
-   * The tag should be a valid SVG element tag name.
-   */
-  static bool isTagSupported(String tag) {
-    var e = new $CLASSNAME.tag(tag);
-    return e is $CLASSNAME && !(e is UnknownElement);
-  }
 $!MEMBERS
 }