Added getElementById method due to change in JavaDOM adhering to W3C specs.

git-svn-id: svn://10.0.0.236/trunk@60539 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/java/dom/tests/src/DocumentImpl.java

@@ -89,4 +89,9 @@ public class DocumentImpl extends NodeImpl implements Document, DocumentEvent {
     public NodeList getElementsByTagNameNS(String namespaceURI, String localName) {
         throw new UnsupportedOperationException();
     }
+
+   public Element getElementById(String elementId) {
+        throw new UnsupportedOperationException();
+    };
+
 }