binding: Let indexed interceptor falls through to named interceptor.

third_party/WebKit/Source/modules/storage/Storage.idl

 /*
  * Copyright (C) 2008 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 21 matching lines @@
     [NotEnumerable, RaisesException] DOMString? key(unsigned long index);
     [LogActivity, NotEnumerable, RaisesException] DOMString? getItem(DOMString key);
     [LogActivity, NotEnumerable, RaisesException] void setItem(DOMString key, DOMString value);
     [LogActivity, NotEnumerable, RaisesException] void removeItem(DOMString key);
     [LogActivity, NotEnumerable, RaisesException] void clear();
 
     // TODO(foolip): Merge these into getItem/setItem/removeItem.
     [RaisesException] getter DOMString (DOMString name);
     [RaisesException] setter DOMString (DOMString name, DOMString value);
     [RaisesException] deleter boolean (DOMString name);
-
-    // Non-standard APIs
-    [NotEnumerable, RaisesException] getter DOMString (unsigned long index);
-    [RaisesException] setter DOMString (unsigned long index, DOMString value);
-    [RaisesException] deleter boolean (unsigned long index);
 };