[Telemetry] Move telemetry/examples to telemetry/experimental.

tools/telemetry/examples/telemetry_perf_test.py

-#!/usr/bin/env python
-# Copyright 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
-import time
-
-sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir))
-
-from telemetry.core import browser_finder
-from telemetry.core import browser_options
-
-
-def Main(args):
-  options = browser_options.BrowserFinderOptions()
-  parser = options.CreateParser('telemetry_perf_test.py')
-  options, args = parser.parse_args(args)
-
-  browser_to_create = browser_finder.FindBrowser(options)
-  assert browser_to_create
-  with browser_to_create.Create(options) as b:
-    tab = b.tabs[0]
-
-    # Measure round-trip-time for evaluate
-    times = []
-    for i in range(1000):
-      start = time.time()
-      tab.EvaluateJavaScript('%i * 2' % i)
-      times.append(time.time() - start)
-    N = float(len(times))
-    avg = sum(times, 0.0) / N
-    squared_diffs = [(t - avg) * (t - avg) for t in times]
-    stdev = sum(squared_diffs, 0.0) / (N - 1)
-    times.sort()
-    percentile_75 = times[int(0.75 * N)]
-
-    print "%s: avg=%f; stdev=%f; min=%f; 75th percentile = %f" % (
-      "Round trip time (seconds)",
-      avg, stdev, min(times), percentile_75)
-
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(Main(sys.argv[1:]))