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

build/android/devil/utils/reraiser_thread_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 reraiser_thread.py."""
 
 import threading
 import unittest
 
-from pylib.utils import reraiser_thread
-from pylib.utils import watchdog_timer
+from devil.utils import reraiser_thread
+from devil.utils import watchdog_timer
 
 
 class TestException(Exception):
   pass
 
 
 class TestReraiserThread(unittest.TestCase):
   """Tests for reraiser_thread.ReraiserThread."""
   def testNominal(self):
     result = [None, None]
@@ skipping 80 matching lines @@
     results = reraiser_thread.RunAsync([lambda:1])
     self.assertEqual([1], results)
 
   def testTwoArgs(self):
     a, b = reraiser_thread.RunAsync((lambda:1, lambda:2))
     self.assertEqual(1, a)
     self.assertEqual(2, b)
 
 if __name__ == '__main__':
   unittest.main()