Convert decodeAudioData to return a Future.

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
 
 typed_array_renames = {
     'ArrayBuffer': 'ByteBuffer',
@@ skipping 107 matching lines @@
   'WorkerContext', # Workers
   'WorkerLocation', # Workers
   'WorkerNavigator', # Workers
 ]
 
 for interface in _removed_html_interfaces:
   html_interface_renames[interface] = '_' + interface
 
 convert_to_future_members = monitored.Set(
     'htmlrenamer.converted_to_future_members', [
+  'AudioContext.decodeAudioData',
   'DataTransferItem.getAsString',
   'DirectoryEntry.getDirectory',
   'DirectoryEntry.getFile',
   'DirectoryEntry.removeRecursively',
   'DirectoryReader.readEntries',
   'DOMWindow.webkitRequestFileSystem',
   'DOMWindow.webkitResolveLocalFileSystemURL',
   'Entry.copyTo',
   'Entry.getMetadata',
   'Entry.getParent',
@@ skipping 716 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)