Make Selection.prototype.toString() enumerable.

third_party/WebKit/Source/core/editing/Selection.idl

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Google Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 40 matching lines @@
     [MeasureAs=SelectionCollapseToStart, RaisesException] void collapseToStart();
     [MeasureAs=SelectionCollapseToEnd, RaisesException] void collapseToEnd();
     [MeasureAs=SelectionExtend, RaisesException] void extend(Node node, optional long offset = 0);
     // TODO(philipj): The arguments should be anchorNode, anchorOffset,
     // focusNode and focusOffset, and none of them are nullable in the spec.
     [MeasureAs=SelectionSetBaseAndExtent, RaisesException] void setBaseAndExtent(Node? baseNode, long baseOffset,
                                                                                  Node? extentNode, long extentOffset);
     [MeasureAs=SelectionSelectAllChildren, RaisesException] void selectAllChildren(Node node);
     [MeasureAs=SelectionDeleteDromDocument, CustomElementCallbacks] void deleteFromDocument();
     [MeasureAs=SelectionContainsNode] boolean containsNode(Node node, optional boolean allowPartialContainment = false);
-    // TODO(philipj): The spec does not use [NotEnumerable]. See also:
-    // https://codereview.chromium.org/345983004/
-    // https://www.w3.org/Bugs/Public/show_bug.cgi?id=26179
-    [MeasureAs=SelectionDOMString, NotEnumerable] stringifier DOMString();
+    [MeasureAs=SelectionDOMString] stringifier;
 
     // Non-standard APIs
 
     // https://github.com/w3c/selection-api/issues/34
     [MeasureAs=SelectionBaseNode] readonly attribute Node? baseNode;
     [MeasureAs=SelectionBaseOffset] readonly attribute long baseOffset;
     [MeasureAs=SelectionExtentNode] readonly attribute Node? extentNode;
     [MeasureAs=SelectionExtentOffset] readonly attribute long extentOffset;
 
     // https://github.com/w3c/selection-api/issues/37
     [MeasureAs=SelectionModify] void modify([Default=Undefined] optional DOMString alter,
                                             [Default=Undefined] optional DOMString direction,
                                             [Default=Undefined] optional DOMString granularity);
 };