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

build/android/pylib/base/test_dispatcher.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.
 
 """Dispatches tests, either sharding or replicating them.
 
 Performs the following steps:
 * Create a test collection factory, using the given tests
   - If sharding: test collection factory returns the same shared test collection
     to all test runners
   - If replciating: test collection factory returns a unique test collection to
     each test runner, with the same set of tests in each.
 * Create a test runner for each device.
 * Run each test runner in its own thread, grabbing tests from the test
   collection until there are no tests left.
 """
 
 # TODO(jbudorick) Deprecate and remove this class after any relevant parts have
 # been ported to the new environment / test instance model.
 
 import logging
 import threading
 
+from devil.android import device_errors
+from devil.utils import reraiser_thread
+from devil.utils import watchdog_timer
 from pylib import constants
 from pylib.base import base_test_result
 from pylib.base import test_collection
-from pylib.device import device_errors
-from pylib.utils import reraiser_thread
-from pylib.utils import watchdog_timer
 
 
 DEFAULT_TIMEOUT = 7 * 60  # seven minutes
 
 
 class _ThreadSafeCounter(object):
   """A threadsafe counter."""
 
   def __init__(self):
     self._lock = threading.Lock()
@@ skipping 286 matching lines @@
   try:
     return _RunAllTests(runners, test_collection_factory,
                         num_retries, test_timeout, tag_results_with_device)
   finally:
     try:
       _TearDownRunners(runners, setup_timeout)
     except device_errors.DeviceUnreachableError as e:
       logging.warning('Device unresponsive during TearDown: [%s]', e)
     except Exception as e:
       logging.error('Unexpected exception caught during TearDown: %s' % str(e))