Rename PyAuto waterfall to ChromeDriver.

scripts/slave/chromium/chromedriver_buildbot_run.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.
 
-"""Entry point for the QA buildbots.
+"""Entry point for the ChromeDriver buildbots.
 
 This script is called from buildbot and reports results using the buildbot
 annotation scheme.
 """
 
 import optparse
 import sys
 
 from common import chromium_utils
 
 
 def main():
   parser = optparse.OptionParser()
   chromium_utils.AddPropertiesOptions(parser)
   options, _ = parser.parse_args()
-  master_name = options.build_properties.get('mastername')
 
-  if master_name == 'chromium.pyauto':
-    return chromium_utils.RunCommand(
-        [sys.executable,
-         '../../../scripts/slave/runtest.py',
-         '--build-dir', 'src/build',
-         '--run-python-script',
-         'src/chrome/test/chromedriver/run_buildbot_steps.py',
-         '--revision',
-         options.build_properties.get('got_revision'),
-        ])
-  else:
-    raise RuntimeError('Unrecognized master: ' + master_name)
+  return chromium_utils.RunCommand(
+      [sys.executable,
+       '../../../scripts/slave/runtest.py',
+       '--build-dir', 'src/build',
+       '--run-python-script',
+       'src/chrome/test/chromedriver/run_buildbot_steps.py',
+       '--revision',
+       options.build_properties.get('got_revision'),
+      ])
 
 
 if __name__ == '__main__':
   sys.exit(main())