Cleaning up some DOM APIs which were marked as deprecated because they were moved or renamed.

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

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index 188759ea742f09c3ae992fe2279559f0bc12dab9..47f0e17fa9e5d4f9f68dd70e736bdab8521e7dc7 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -450,6 +450,16 @@ $endif
     _xtag = value;
   }
 
+  @DomName('Element.localName')
+  @DocsEditable
+  String get localName => $dom_localName;
+
+  @DomName('Element.namespaceUri')
+  @DocsEditable
+  String get namespaceUri => $dom_namespaceUri;
+
+  String toString() => localName;
+
   /**
    * Scrolls this element into view.
    *
@@ -507,7 +517,7 @@ $if DART2JS
     }
   }
 
-  @DomName('Element.webkitTransitionEndEvent')
+  @DomName('Element.transitionEndEvent')
   static const EventStreamProvider<TransitionEvent> transitionEndEvent =
       const _CustomEventStreamProvider<TransitionEvent>(
         Element._determineTransitionEventType);