[telemetry] Update examples so they work.

tools/telemetry/examples/list_available_browsers

 #!/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.
+
 import os
 import sys
 
-
-sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
 
 from telemetry.core import browser_options
 
+
 def Main(args):
-  options = browser_options.BrowserOptions()
-  options.browser_type = 'list';
+  options = browser_options.BrowserFinderOptions()
+  options.browser_type = 'list'
   parser = options.CreateParser('list_available_browsers')
   parser.parse_args()
   return 0
 
+
 if __name__ == '__main__':
   sys.exit(Main(sys.argv[1:]))