Automate Chrome Endure setup process.

This script automates Chrome Endure setup process and
starts a local Http server to serve the results.

This CL is to re-commit the CL that got reverted due
to check_perms failures. Solve the failures by
add 'x' permission to endure_setup.py and endure_server.py

The original CL:
https://chromiumcodereview.appspot.com/10837114/

The CL that reverted the above CL:
https://chromiumcodereview.appspot.com/10860020/

BUG=None
TEST=Ran the script on two Linux_x64 machines. Ran python src/tools/checkperms/checkperms.py --root src


Review URL: https://chromiumcodereview.appspot.com/10829400

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152262 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/functional/perf/endure_server.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.
+
+"""Start an HTTP server which serves Chrome Endure graphs.
+
+Usage:
+    python endure_server.py [options]
+
+To view Chrome Endure graphs from a browser,
+run this script to start a local HTTP server that serves the directory
+where graph code and test results are located. A port will be automatically
+picked. You can then view the graphs via http://localhost:<GIVEN_PORT>.
+
+Examples:
+    >python endure_server.py
+      Start a server which serves the default location
+      <CURRENT_WORKING_DIR>/chrome_graph.
+
+    >python endure_server.py --graph-dir=/home/user/Document/graph_dir
+      Start a server which serves /home/user/Document/graph_dir which
+      is where your graph code and test results are.
+"""
+
+import BaseHTTPServer
+import logging
+import optparse
+import os
+import SimpleHTTPServer
+import sys
+
+
+class HelpFormatter(optparse.IndentedHelpFormatter):
+  """Format the help message of this script."""
+
+  def format_description(self, description):
+    """Override to keep original format of the description."""
+    return description + '\n' if description else ''
+
+
+def _ParseArgs(argv):
+  parser = optparse.OptionParser(
+      usage='%prog [options]',
+      formatter=HelpFormatter(),
+      description=__doc__)
+  parser.add_option(
+      '-g', '--graph-dir', type='string',
+      default=os.path.join(os.getcwd(), 'chrome_graph'),
+      help='The directory that contains graph code ' \
+           'and data files of test results. Default value is ' \
+           '<CURRENT_WORKING_DIR>/chrome_graph')
+  return parser.parse_args(argv)
+
+
+def Run(argv):
+  """Start an HTTP server which serves Chrome Endure graphs."""
+  logging.basicConfig(format='[%(levelname)s] %(message)s', level=logging.DEBUG)
+  options, _ = _ParseArgs(argv)
+  graph_dir = os.path.abspath(options.graph_dir)
+  cur_dir = os.getcwd()
+  os.chdir(graph_dir)
+  httpd = BaseHTTPServer.HTTPServer(
+      ('', 0), SimpleHTTPServer.SimpleHTTPRequestHandler)
+  try:
+    logging.info('Serving %s at port %d', graph_dir, httpd.server_port)
+    logging.info('View graphs at http://localhost:%d', httpd.server_port)
+    logging.info('Press Ctrl-C to stop the server.')
+    httpd.serve_forever()
+  except KeyboardInterrupt:
+    logging.info('Shutting down ...')
+    httpd.shutdown()
+  finally:
+    os.chdir(cur_dir)
+  return 0
+
+
+if '__main__' == __name__:
+  sys.exit(Run(sys.argv[1:]))