android: use common known_devices_file path from chromium_android

scripts/slave/recipes/android/perf.py

 # Copyright 2014 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.
 
 from recipe_engine.types import freeze
 
 
 DEPS = [
     'adb',
     'chromium',
@@ skipping 158 matching lines @@
         test_runner()
       except api.step.StepFailure as f:
         failures.append(f)
 
     dynamic_perf_tests = api.chromium_tests.steps.DynamicPerfTests(
         builder['perf_id'], 'android', None,
         max_battery_temp=builder.get('max_battery_temp'),
         num_device_shards=builder['num_device_shards'],
         num_host_shards=builder.get('num_host_shards', 1),
         shard_index=builder.get('shard_index', 0),
-        known_devices_file=builder.get('known_devices_file', None),
         override_browser_name=builder.get('browser_name'))
     dynamic_perf_tests.run(api, None)
 
     if failures:
       raise api.step.StepFailure('src-side perf tests failed %s' % failures)
   finally:
     api.chromium_android.common_tests_final_steps(
         logcat_gs_bucket='chromium-android')
 
 
@@ skipping 89 matching lines @@
           mastername='chromium.perf',
           buildername='Android Nexus5 Perf (1)',
           parent_buildername='parent_buildername',
           parent_buildnumber='1729',
           parent_revision='deadbeef',
           revision='deadbeef',
           slavename='slavename',
           target='Release') +
       api.override_step_data(
           'perf_test.foo', retcode=87))