[Android][telemetry] Update pylib imports for modules that moved into devil.

build/android/pylib/utils/timeout_retry_unittest.py

-# Copyright 2013 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.
-
-"""Unittests for timeout_and_retry.py."""
-
-import unittest
-
-from pylib.utils import reraiser_thread
-from pylib.utils import timeout_retry
-
-
-class TestException(Exception):
-  pass
-
-
-def _NeverEnding(tries):
-  tries[0] += 1
-  while True:
-    pass
-
-
-def _CountTries(tries):
-  tries[0] += 1
-  raise TestException
-
-
-class TestRun(unittest.TestCase):
-  """Tests for timeout_retry.Run."""
-
-  def testRun(self):
-    self.assertTrue(timeout_retry.Run(
-        lambda x: x, 30, 3, [True], {}))
-
-  def testTimeout(self):
-    tries = [0]
-    self.assertRaises(reraiser_thread.TimeoutError,
-        timeout_retry.Run, lambda: _NeverEnding(tries), 0, 3)
-    self.assertEqual(tries[0], 4)
-
-  def testRetries(self):
-    tries = [0]
-    self.assertRaises(TestException,
-        timeout_retry.Run, lambda: _CountTries(tries), 30, 3)
-    self.assertEqual(tries[0], 4)
-
-  def testReturnValue(self):
-    self.assertTrue(timeout_retry.Run(lambda: True, 30, 3))
-
-
-if __name__ == '__main__':
-  unittest.main()