Fixing ArrayBuffer et al on IE.

tools/dom/scripts/systemhtml.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.
 
 """This module provides shared functionality for the system to generate
 Dart:html APIs from the IDL database."""
 
 import emitter
 import os
 from generator import *
 from htmldartgenerator import *
 
 _js_custom_members = set([
+    'ArrayBuffer.slice',
     'AudioBufferSourceNode.start',
     'AudioBufferSourceNode.stop',
     'AudioContext.createGain',
     'AudioContext.createScriptProcessor',
     'Console.memory',
     'Console.profiles',
     'Console.assertCondition',
     'Console.count',
     'Console.debug',
     'Console.dir',
@@ skipping 35 matching lines @@
     'Window.indexedDB',
     'Window.location',
     'Window.open',
     'Window.requestAnimationFrame',
     'Window.webkitCancelAnimationFrame',
     'Window.webkitRequestAnimationFrame',
     'WorkerContext.indexedDB',
     ])
 
 js_support_checks = {
+  'ArrayBuffer': "JS('bool', 'typeof window.ArrayBuffer != \"undefined\"')",
   'HTMLContentElement': "Element.isTagSupported('content')",
   'HTMLDataListElement': "Element.isTagSupported('datalist')",
   'HTMLDetailsElement': "Element.isTagSupported('details')",
   'HTMLEmbedElement': "Element.isTagSupported('embed')",
   # IE creates keygen as Block elements
   'HTMLKeygenElement': "Element.isTagSupported('keygen') "
       "&& (new Element.tag('keygen') is KeygenElement)",
   'HTMLMarqueeElement': "Element.isTagSupported('marquee')"
       "&& (new Element.tag('marquee') is MarqueeElement)",
   'HTMLMeterElement': "Element.isTagSupported('meter')",
@@ skipping 961 matching lines @@
     for library_name in libraries:
       self._libraries[library_name] = DartLibrary(
           library_name, template_loader, library_type, output_dir)
 
   def AddFile(self, basename, library_name, path):
     self._libraries[library_name].AddFile(path)
 
   def Emit(self, emitter, auxiliary_dir):
     for lib in self._libraries.values():
       lib.Emit(emitter, auxiliary_dir)