Add win8 aura bot to chromium.win, make tryserver match

masters/master.chromium.win/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # See master.experimental/slaves.cfg for documentation.
 
 
@@ skipping 322 matching lines @@
     'bits': '64',
   },
   {
     'master': 'ChromiumWin',
     'builder': 'Win Aura Tests (3)',
     'hostname': 'vm881-m1',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   },
-] + [
-  # Deployed for http://crbug.com/165972 but not used yet.
   {
-    'master': 'ChromiumWinUnused',
-    'hostname': 'vm898-m1' ,
+    'master': 'ChromiumWin',
+    'builder': 'Win8 Aura',
+    'hostname': 'vm898-m1',
     'os': 'win',
     'version': 'win8',
     'bits': '64',
-  }
+  },
 ]
-