Renaming Element.dataAttributes to Element.dataset.

tools/dom/scripts/htmlrenamer.py

 #!/usr/bin/python
 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 import logging
 import monitored
 import re
 
 html_interface_renames = monitored.Dict('htmlrenamer.html_interface_renames', {
     'CDATASection': 'CDataSection',
@@ skipping 314 matching lines @@
     'DOMCoreException.NO_MODIFICATION_ALLOWED_ERR',
     'DOMCoreException.QUOTA_EXCEEDED_ERR',
     'DOMCoreException.SECURITY_ERR',
     'DOMCoreException.SYNTAX_ERR',
     'DOMCoreException.TIMEOUT_ERR',
     'DOMCoreException.TYPE_MISMATCH_ERR',
     'DOMCoreException.URL_MISMATCH_ERR',
     'DOMCoreException.VALIDATION_ERR',
     'DOMCoreException.WRONG_DOCUMENT_ERR',
     'Element.accessKey',
+    'Element.dataset',
     'Element.get:classList',
     'Element.getAttributeNode',
     'Element.getAttributeNodeNS',
     'Element.getElementsByTagNameNS',
     'Element.innerText',
     'Element.outerText',
     'Element.removeAttributeNode',
     'Element.set:outerHTML',
     'Element.setAttributeNode',
     'Element.setAttributeNodeNS',
@@ skipping 246 matching lines @@
 
     # We're looking for a sequence of letters which start with capital letter
     # then a series of caps and finishes with either the end of the string or
     # a capital letter.
     # The [0-9] check is for names such as 2D or 3D
     # The following test cases should match as:
     #   WebKitCSSFilterValue: WebKit(C)(SS)(F)ilterValue
     #   XPathNSResolver: (X)()(P)ath(N)(S)(R)esolver (no change)
     #   IFrameElement: (I)()(F)rameElement (no change)
     return re.sub(r'([A-Z])([A-Z]{2,})([A-Z]|$)', toLower, name)