Revert "Remove performance_ui_tests from bot configs."

scripts/slave/kill_processes.py

 #!/usr/bin/env 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.
 
 """A tool to kill any leftover test processes, executed by buildbot.
 
 Only works on Windows."""
 
 import optparse
@@ skipping 180 matching lines @@
     'interactive_ui_tests.exe',
     'ipc_tests.exe',
     'jingle_unittests.exe',
     'mediumtest_ie.exe',
     'memory_test.exe',
     'nacl64.exe',
     'net_unittests.exe',
     'page_cycler_tests.exe',
     'peerconnection_server.exe',
     'perf_tests.exe',
+    'performance_ui_tests.exe',
     'printing_unittests.exe',
     'reliability_tests.exe',
     'sel_ldr.exe',
     'sel_ldr64.exe',
     'selenium_tests.exe',
     'startup_tests.exe',
     'sync_integration_tests.exe',
     'tab_switching_test.exe',
     'tld_cleanup.exe',
     'unit_tests.exe',
@@ skipping 39 matching lines @@
   # we exit with an error code if they're not.
   if KillAll(processes, must_die=True):
     return rc
 
   # Some processes were not killed, exit with non-zero status.
   return 1
 
 
 if '__main__' == __name__:
   sys.exit(main())