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

masters/master.chromium.win/master_win_cfg.py

Index: masters/master.chromium.win/master_win_cfg.py
===================================================================
--- masters/master.chromium.win/master_win_cfg.py	(revision 175544)
+++ masters/master.chromium.win/master_win_cfg.py	(working copy)
@@ -419,5 +419,20 @@
                         'start_crash_handler': True,
                         'generate_gtest_json': True}))
 
+B('Win8 Aura', 'dbg_aura_win8', 'testers|windows',
+  'win_dbg_aura_trigger', notify_on_missing=True)
+F('dbg_aura_win8', win_tester().ChromiumFactory(
+    target='Debug',
+    slave_type='Tester',
+    build_url=dbg_aura_archive,
+    tests=['ash_unittests',
+           'aura',
+           'compositor',
+           'views_unittests',
+          ],
+    factory_properties={'process_dumps': True,
+                        'start_crash_handler': True,
+                        'generate_gtest_json': True}))
+
 def Update(config, active_master, c):
   return helper.Update(c)